Eighteen units, roughly one a week. Each unit opens with a map of the main positions (the rival schools and their sub-strains, who holds them, and where to read each one), then videos, the encyclopedia, and your own books, cited to chapter, section and printed page. Units 1–12 are the core of the subject (what exists and what it is like); 13–15 turn to persons; 16–18 are the big-picture and method questions.
How to work each unit
- Map — skim the unit’s Main positions first, so you know the options before anyone argues for one.
- Watch the videos in the order listed (usually 30–60 minutes). Crash Course and Wireless Philosophy first; Sadler and Philosophy Tube go deeper or add history.
- Look it up: read the opening sections of the Stanford Encyclopedia (SEP) entry. Wikipedia is the quick orientation; SEP is the authority.
- Read the core book passage (marked Core). Everything else is for depth.
- Write a short answer to the unit’s question in your own voice. A position card in 30 Rhetoric works well, so it enters your review queue.
Your library
Page numbers are the printed page numbers in each book, not the PDF viewer’s page count. The PDFs live in /Volumes/NAS/Library/Philosophy/Topics/Metaphysics.
| Short name | Book | Edition in your folder | Best used for |
|---|---|---|---|
| Loux & Crisp | Michael J. Loux and Thomas M. Crisp, Metaphysics: A Contemporary Introduction | 4th ed., Routledge 2017 | The spine of the plan: rigorous, analytic, covers almost every unit |
| Ney | Alyssa Ney, Metaphysics: An Introduction | 1st ed., Routledge 2014 | The clearest modern textbook; excellent logic primer at the front |
| van Inwagen | Peter van Inwagen, Metaphysics | 4th ed., Westview 2015 | The big questions: God, persons, freedom, being |
| Mumford | Stephen Mumford, Metaphysics: A Very Short Introduction | OUP 2012 | Fast warm-up; one short chapter per topic |
| Key Concepts | Helen Beebee, Nikk Effingham and Philip Goff, Metaphysics: The Key Concepts | Routledge 2011 | A dictionary; look up entries as you meet terms |
| Crane & Farkas | Tim Crane and Katalin Farkas (eds.), Metaphysics: A Guide and Anthology | OUP 2004 | The primary texts (Quine, Lewis, Kripke, Parfit, and others) |
| Heil | John Heil, From an Ontological Point of View | OUP 2003 | Advanced; argues one view (powers and modes) rather than surveying |
| Feser | Edward Feser, Scholastic Metaphysics: A Contemporary Introduction | Editiones Scholasticae 2014 | The Aristotelian–Thomist counterweight to the analytic books |
| Moore | A. W. Moore, The Evolution of Modern Metaphysics: Making Sense of Things | Cambridge 2012 | The history, Descartes to Deleuze |
| Hasker | William Hasker, Metaphysics: Constructing a World View | InterVarsity 1983 | Short Christian-philosophy introduction; dated but clear |
| Thomasson | Amie Thomasson, Rethinking Metaphysics | OUP 2025 | A skeptic’s challenge to the whole enterprise; read last |
| Heidegger | Martin Heidegger, Introduction to Metaphysics, trans. Fried and Polt | 2nd ed., Yale 2014 | The continental counterpoint on Being |
| Leibniz | G. W. Leibniz, Discourse on Metaphysics, trans. Jonathan Bennett | Early Modern Texts | A short primary text; cited by section (§) |
Two notes on the files themselves:
- Duplicate van Inwagen: both van Inwagen PDFs are the same 4th edition. Keep
Metaphysics -- Van Inwagen, Peter.pdf, which carries the printed page numbers used below; the other one only has PDF page numbers. - Crane & Farkas can’t be searched: its PDF is a scan with no text layer, so search inside it won’t find anything. Navigate by the page numbers given here.
The channels
- Crash Course Philosophy (playlist) — short and lively; covers about a third of the units.
- Wireless Philosophy (Wi-Phi) — animated explainers by working philosophers (Yale, MIT and others).
- Gregory B. Sadler — university lectures on the classic texts (Aristotle, Aquinas, Hume, Kant, Heidegger).
- Philosophy Tube — Abigail Thorn’s early videos (2013–2016) cover time, possible worlds, abstract objects, composition and identity.
How these were chosen: Reddit was not reachable from my tools, so the three channels besides Crash Course are the ones named most often across seven published roundups of the best philosophy YouTube channels. Wireless Philosophy and Sadler each appeared on five lists and Philosophy Tube on four. Where none of the four covers a topic, a Bonus video from a well-regarded source fills the gap (Closer To Truth, Jeffrey Kaplan, Kane B, Carneades.org).
Every strain in the Main positions maps now carries its own Watch: links, so you can go straight from a position (say, classical compatibilism) to a video on it. Those lists draw first on the four channels above, then on other academic sources: Jeffrey Kaplan, Kane B, Closer To Truth, Daniel Bonevac, the Thomistic Institute (Aquinas 101), the Royal Institute of Philosophy, Carneades.org, Philosophy Vibe, Philosophy Overdose (archival interviews such as Magee’s), Darren Staloff’s lectures and the Free Will Show. Every link was checked against YouTube before it went in.
At a glance
| Unit | Topic | The question |
|---|---|---|
| 1 | What is metaphysics? | What is it trying to do, and can it succeed? |
| 2 | Being and existence | What does it mean to exist, and how do we decide what exists? |
| 3 | Universals and particulars | What do two red things have in common? |
| 4 | Abstract objects | Do numbers and propositions exist? |
| 5 | Substance | What is a thing, beyond its properties? |
| 6 | Change, act and potency, form and matter | How is change possible? |
| 7 | Possibility and necessity | What makes something possible or necessary? |
| 8 | Essence | Which features could a thing not lack? |
| 9 | Causation, laws and powers | What is it for one thing to cause another? |
| 10 | Time | Is only the present real? Does time pass? |
| 11 | Persistence | How does one thing last through change? |
| 12 | Parts and wholes | When do many things make up one thing? |
| 13 | Personal identity | What makes you the same person over time? |
| 14 | Mind and body | Are you a physical thing? |
| 15 | Free will | Can you act freely if everything is caused? |
| 16 | Why anything at all? | Why is there something rather than nothing? |
| 17 | Realism, anti-realism, idealism | Is reality independent of minds? |
| 18 | Grounding and the method of metaphysics | What depends on what, and is metaphysics worth doing? |
Unit 1 — What Is Metaphysics?
Question: What is metaphysics trying to do, and why did Hume and Kant think it had failed?
Main positions
- Aristotelian “first philosophy” — metaphysics studies being as such and its highest kinds (categories). Figures: Aristotle, Aquinas, E. J. Lowe. Read: Loux & Crisp, “Metaphysics as Category Theory” (p. 10); Feser, ch. 0 “Prolegomenon”. Watch: Being and Metaphysics (Aquinas 101) — Thomistic Institute · 5:08; Aristotle, Metaphysics bk. 1: Philosophy’s Origin in Wonder — Sadler · 15:17; Aristotle on the Science of Being qua Being (Metaphysics Gamma) — Brent Kalar · 46:44
- Rationalist system-building — reason alone can reveal the structure of reality. Figures: Descartes, Spinoza, Leibniz. Read: Moore, chs. 1–3 (pp. 25–86). Watch: The Philosophy of Spinoza & Leibniz (Bryan Magee & Anthony Quinton, 1987) — Philosophy Overdose · 43:31; Leibniz’s Rationalism — Daniel Bonevac · 44:26
- Empiricist skepticism — claims that are neither about relations of ideas nor about matters of fact are empty. Hume ends the Enquiry (§12): “Commit it then to the flames: for it can contain nothing but sophistry and illusion.” Read: Moore, ch. 4 “Hume” (p. 87). Watch: Hume, Enquiry: Hume’s Fork — Sadler · 17:10; Locke, Berkeley, & Empiricism: Crash Course Philosophy #6 — Crash Course · 9:52; Hume’s Skepticism and Induction, Part 1 — Wi-Phi · 4:34
- Kant’s critical metaphysics — a metaphysics of the conditions of experience is possible; claims about things beyond experience are not. Read: Moore, ch. 5 (p. 107). Watch: Kant: On Metaphysical Knowledge — Wi-Phi · 10:09; Beginner’s Guide to Kant’s Metaphysics & Epistemology — Philosophy Tube · 5:56; Kant, Prolegomena: How Synthetic A Priori Cognitions Are Possible — Sadler · 12:44
- Logical positivism and Carnap — metaphysical sentences are meaningless, or (“external questions”) practical choices of language. Figures: Carnap, Ayer. Read: Ney, “Carnap’s Two Critiques of Metaphysics” (p. 120); Moore, ch. 11 (p. 279). Watch: Logical Positivism: The Vienna Circle — Philosophy Overdose · 11:34; A. J. Ayer, Language, Truth, and Logic: The Criterion of Verifiability — Sadler · 16:05; Metaphysics: Carnap on Ontology — Kane B · 55:01
- Quinean naturalism — metaphysics is continuous with science; what exists is what our best theory quantifies over. Read: Moore, ch. 12 (p. 302). Watch: The Ideas of Quine (Bryan Magee & Quine, 1977) — Philosophy Overdose · 44:26; Naturalized Metaphysics 1 — Kane B · 33:02
- Contemporary “serious” metaphysics — a revival of realism about the world’s structure. Figures: Lewis, Armstrong, Fine, Sider, Schaffer. Read: Loux & Crisp, Introduction. Watch: Does Metaphysics Reveal Reality? (Episode 908) — Closer To Truth · 26:47; Ted Sider: Is Metaphysics About the Real World? (Part 1) — Plato For The Masses · 14:41
- Descriptive vs revisionary — P. F. Strawson’s distinction (Individuals, 1959) between describing the structure of our actual thought about the world and proposing a better one.
- Deflationary and conceptual views — many debates are verbal or can be settled easily; metaphysics is really conceptual work. Figures: Hirsch, Thomasson. Read: Thomasson, ch. 6. Watch: Amie Thomasson: Easy Ontology and the Work of Metaphysics — Royal Institute of Philosophy · 59:16
- Heidegger and the continental line — the tradition forgot the question of Being and turned it into a theory of the highest being (Heidegger’s critique of “onto-theology”). Read: Heidegger, ch. 1; Moore, ch. 18 (p. 459). Watch: Heidegger, Being and Time: The Question of the Meaning of Being — Sadler · 13:29; Heidegger: Being and Time — Michael Sugrue · 44:53
Study
Watch
- Leonardo DiCaprio & The Nature of Reality: Crash Course Philosophy #4 — Crash Course (appearance and reality; Plato’s cave)
- What is Metaphysics? (Gentleman Thinker) — Philosophy Tube · 1:34
- Kant: On Metaphysical Knowledge — Wi-Phi · 10:09
- David Hume, Enquiry | Hume’s Fork — Sadler · 17:10
- Kant, Prolegomena | Problems With Metaphysics As A Science — Sadler · 12:56
- Bonus: Peter van Inwagen — How Does Metaphysics Reveal Reality? — Closer To Truth · 8:08
Encyclopedia: SEP: Metaphysics · Wikipedia: Metaphysics
Read
- Core: Loux & Crisp, Introduction (pp. 1–16): “The Nature of Metaphysics—Some Historical Reflections” (p. 2) and “Metaphysics as Category Theory” (p. 10)
- van Inwagen, ch. 1 “Introduction” (pp. 1–22)
- Mumford, “What is an introduction?” (pp. 1–2) and ch. 10 “What is metaphysics?” (pp. 98–108)
- Hasker, ch. 1 “Introducing Metaphysics”: “Metaphysical Questions”, “Answering Metaphysical Questions”, “Evaluating Metaphysical Theories”
- Moore, Introduction §§1–8 (pp. 1–22), especially §6 “Three Questions” and §7 “The Importance of Metaphysics” (p. 16)
- If your logic is rusty: Ney, “Preparatory Background: Logic for Metaphysics” (pp. 1–28). It pays off in every later unit.
- Key Concepts: Analysis (p. 5), Conceptual analysis (p. 45), Theoretical virtues (p. 248), Ockham’s razor (p. 150)
- Already in your vault: Hicks, Lecture 2: Essential Questions, §3 “The basic metaphysical categories”
Write: Define metaphysics in two sentences, then state Kant’s complaint against it and whether you accept it.
Unit 2 — Being and Existence
Question: Does Sherlock Holmes exist? How would Meinong, Russell and Quine each answer, and who is right?
Key terms: ontology · ontological commitment · non-existent objects · paraphrase · Ockham’s razor
Main positions
- Meinongianism — there are objects that do not exist (the golden mountain, Holmes). Figures: Meinong; today Parsons, Routley, Priest, Zalta. Read: Key Concepts, “Meinongianism” (p. 120); Ney, p. 31. Watch: Nonexistent Objects & Imaginary Worlds: Crash Course Philosophy #29 — Crash Course · 9:21; Meinong’s Jungle (Theory of Objects) — Carneades.org · 25:41; Are There Nonexistent Objects? — Kane B · 1:07:18
- Russell’s theory of descriptions — “the present King of France” is not a name for an object but a disguised quantified claim, so no non-existent object is needed. Read: Ney, “The Method of Paraphrase” (p. 42). Watch: Bertrand Russell: Theory of Descriptions — Jeffrey Kaplan · 20:57; Russell’s Theory of Definite Descriptions — Carneades.org · 4:59
- Quine’s criterion — a theory is committed to whatever must be in the range of its bound variables for it to be true; “exists” and “there is” mean the same. Read: Crane & Farkas, “On What There Is” (p. 179); Ney, p. 37. Watch: What Exists? Jonathan Schaffer Simplifies Quine’s “On What There Is” — Know Time · 3:18; Quine on What There Is — Daniel Bonevac · 48:05
- Existence is not a first-order property — Kant: “Being is obviously not a real predicate” (Critique of Pure Reason, A598/B626). Frege: existence is a property of concepts (being instantiated), not of objects. Watch: Kant’s Criticism of the Ontological Argument — Philosophy Vibe · 2:10
- The “thin” view of being — being is univocal and wholly captured by the quantifier. Figure: van Inwagen. Read: van Inwagen, “Coda: Being” (p. 291). Watch: Peter van Inwagen: What Things Really Exist? — Closer To Truth · 10:10
- Ontological pluralism — there are several modes or ways of being. Figures: Aristotle (“being is said in many ways”), Aquinas (the analogy of being), Kris McDaniel. Read: Feser, §4.3 (p. 284). Watch: Existence and Ontological Pluralism (Trenton Merricks) — Majesty of Reason · 1:20:39
- Deflationism about existence questions — quantifier variance (Hirsch) or “easy ontology” (Thomasson): many existence questions are answered trivially by our concepts. Read: Thomasson, ch. 8. Watch: Quantifier Variance (Ted Sider) — Rutgers Center for Philosophy of Religion · 1:19:27; Amie Thomasson: Ontology Made Easy — Books & Books · 53:17
- How much to believe in: Ockham’s razor (don’t multiply entities beyond necessity) versus Jonathan Schaffer’s “laziest razor” (don’t multiply fundamental entities). Read: Ney, “Ockham’s Razor” (p. 48). Watch: What is Ockham’s Razor? (Gentleman Thinker) — Philosophy Tube · 1:14; Occam’s Razor: Rational Principles Explained — Jeffrey Kaplan · 11:34
Study
Watch
- Parmenides of Elea | Being and Non-Being — Sadler · 14:49
- Nonexistent Objects & Imaginary Worlds: Crash Course Philosophy #29 — Crash Course
- Bonus: Bertrand Russell — Theory of Descriptions — Jeffrey Kaplan · 20:57
- Bonus: What Exists? Jonathan Schaffer Simplifies Quine’s “On What There Is” — Know Time · 3:18
Encyclopedia: SEP: Existence · SEP: Nonexistent Objects · SEP: Ontological Commitment · Wikipedia: Existence · Wikipedia: Ontological commitment · Wikipedia: Nonexistent objects
Read
- Core: Ney, ch. 1 “An Introduction to Ontology” (pp. 30–59): “The Puzzle of Nonexistent Objects” (p. 31), “Finding One’s Ontological Commitments: Quine’s Method” (p. 37), “The Method of Paraphrase” (p. 42), “Ockham’s Razor” (p. 48)
- van Inwagen, “Coda: Being” (pp. 291–326)
- Crane & Farkas, Part III “Being”: introduction (p. 137); Quine, “On What There Is” (p. 179); Aristotle, Categories selection (p. 149)
- Heil, ch. 1: §1.1 “The Inescapability of Ontology” and §1.7 “Ontology”
- Moore, ch. 12 “Quine”, §7 “Quinean Metaphysics II: Ontology” (p. 321)
- Scholastic view: Feser, §4.3 “The analogy of being” (p. 284)
- Key Concepts: Existence (p. 69), Being (p. 15), Meinongianism (p. 120), Non-existent objects (p. 147), Ontological commitment (p. 151), Criterion of ontological commitment (p. 55), Paraphrase (p. 155), Ontology (p. 152)
Write: State Quine’s criterion of ontological commitment in one sentence, then give one sentence you believe that seems to commit you to something you don’t want to believe in.
Unit 3 — Universals and Particulars
Question: When two things are both red, is there one thing (redness) they share, or only two similar things?
Key terms: realism · nominalism · tropes · one over many · exemplification · Bradley’s regress
Main positions
- Realism about universals — properties are real, repeatable entities wholly present in each thing that has them. Watch: Universals and Particulars: Realism vs Nominalism Debate — Philosophy Vibe · 14:15; A History of Philosophy 23: The Problem of Universals (Arthur Holmes) — Wheaton College · 1:02:37
- Platonic (transcendent) realism — universals exist even if nothing instantiates them. Figure: Plato. Read: Loux & Crisp, “Are There Any Unexemplified Attributes?” (p. 39). Watch: Aristotle, Metaphysics bk. 1: Plato’s Metaphysics of Form — Sadler · 14:49; Plato, Phaedo: Recollection and the Forms — Sadler · 11:13; Plato’s Metaphysics — Daniel Bonevac · 27:52
- Aristotelian (immanent) realism — universals exist only in their instances. Figures: Aristotle, D. M. Armstrong. Read: Key Concepts, “Immanent realism about universals” (p. 100); Heil, §12.3 “In rebus Universals”; Crane & Farkas, Armstrong (p. 235). Watch: Aristotle, Metaphysics bk. 1: Criticisms of Plato’s Forms — Sadler · 21:11; Realism About Universals — Kane B · 1:02:43
- Moderate (Scholastic) realism — a real common nature exists in things but is individual there; it is universal only as grasped by the intellect. Figures: Aquinas, Scotus. Read: Feser, §4.1.3 (p. 247). Watch: Moderate Realism (Aquinas 101) — Thomistic Institute · 3:43; Universals and Particulars, Genus and Species (Aquinas 101) — Thomistic Institute · 3:18
- Conceptualism — universals are concepts or general ideas in minds. Figures: Abelard, Locke (abstract ideas). Watch: The Problem of Universals: Medieval Philosophy — Philosophy Overdose · 22:44
- Nominalism — only particulars exist. Watch: What is Nominalism? (Universals and Abstracts) — Carneades.org · 5:52; Defending Nominalism (Kenny Boyce) — Majesty of Reason · 1:55:05
- Austere (“ostrich”) nominalism — “a is red” needs no analysis; nothing makes it true beyond a being red. Armstrong coined “ostrich” as a jibe at Quine’s view; Devitt defends it. Read: Loux & Crisp, p. 50; Key Concepts, pp. 12, 154. Watch: What is Nominalism? — Attic Philosophy · 5:43
- Predicate or metalinguistic nominalism — talk of properties is really talk about words. Figure: Sellars. Read: Loux & Crisp, p. 60.
- Class nominalism — a property is the set of its instances. Figures: Quinton, Lewis. Read: Key Concepts, p. 38. Watch: Class Nominalism: Are Properties Just Class Membership? — Chico the Philosurfer · 16:38
- Resemblance nominalism — things are red because they resemble each other; resemblance is primitive. Figures: H. H. Price, Rodriguez-Pereyra. Read: Key Concepts, p. 225. Watch: Resemblance Nominalism — Chico the Philosurfer · 6:54
- Trope theory — properties are real but particular (“this red”); resemblance between tropes does the work of universals. Figures: D. C. Williams, Keith Campbell; Heil’s “modes”. Read: Loux & Crisp, p. 70; Crane & Farkas, Williams (p. 262); Heil, ch. 13 (p. 137). Watch: What is a Trope? (Philosophical Definition) — Carneades.org · 5:49; Trope Theory, God’s Providence, and NFTs (Robert Garcia) — Parker’s Pensées · 1:42:12
- Fictionalism — property talk is a useful fiction. Read: Loux & Crisp, p. 77.
- A related distinction: sparse properties (the few that carve nature at its joints) vs abundant ones (any class at all). Figure: Lewis. Read: Crane & Farkas, Lewis (p. 249); Key Concepts, “Sparse property” (p. 235). Watch: David Lewis’s On the Plurality of Worlds, Section 1.5 — Victor Gijsbers · 17:15
Study
Watch
- Aristotle, Metaphysics bk. 1 | Plato’s Metaphysics of Form — Sadler · 14:49
- Aristotle, Metaphysics bk. 1 | Criticisms of Plato’s Forms — Sadler · 21:11
- Bonus: Realism About Universals — Kane B · 1:02:43. Neither Crash Course, Wi-Phi nor Philosophy Tube has a video on universals, and Kane B’s is the standard recommendation.
Encyclopedia: SEP: Properties · SEP: Tropes · SEP: Nominalism in Metaphysics · SEP: The Medieval Problem of Universals · IEP: Universals · Wikipedia: Problem of universals · Wikipedia: Trope (philosophy)
Read
- Warm-up: Mumford, ch. 2 “What is a circle?” (pp. 14–23)
- Core: Loux & Crisp, ch. 1 “The Problem of Universals I: Metaphysical Realism” (pp. 17–44): “Realism and Nominalism” (p. 17), “Realism and Predication” (p. 21), “Realism and Abstract Reference” (p. 26), “Restrictions on Realism—Exemplification” (p. 29)
- Core: Loux & Crisp, ch. 2 “The Problem of Universals II: Nominalism” (pp. 45–81): “Austere Nominalism” (p. 50), “Metalinguistic Nominalism” (p. 60), “Trope Theory” (p. 70), “Fictionalism” (p. 77)
- Ney, ch. 2: “Universals and the One Over Many Argument” (p. 64), “Nominalism and Other Options” (p. 77)
- Heil, ch. 12 “Universals” (pp. 126–136) and ch. 13 “Modes” (pp. 137–150)
- Feser, §4.1.3 “Moderate realism” (p. 247)
- Crane & Farkas, Part IV: Plato (p. 227), Armstrong (p. 235), Lewis, “New Work for a Theory of Universals” (p. 249), D. C. Williams, “On the Elements of Being” (p. 262)
- Key Concepts: Universals (p. 265), Nominalism (p. 145), Trope theory (p. 255), Resemblance nominalism (p. 225), Class nominalism (p. 38), Ostrich nominalism (p. 154), Austere nominalism (p. 12), Immanent realism (p. 100), Bradley’s regress (p. 18)
- Already in your vault: Books on Universals
Write: Pick realism, trope theory or austere nominalism and give the best objection to your pick.
Unit 4 — Abstract Objects: Numbers, Propositions, Facts
Question: Do numbers exist? If so, where, and how could we know about them?
Main positions
- Platonism — mathematical objects and propositions exist, abstract and mind-independent. Figures: Frege, Gödel. Read: Ney, “Mathematical Objects” (p. 81); Key Concepts, “Platonism” (p. 165). Watch: 4 Ways of Thinking About Abstract Objects — Philosophy Tube · 9:26; Philosophy of Mathematics: Platonism — Kane B · 1:13:21; Silvia Jonas: Is Mathematics Invented or Discovered? — Closer To Truth · 7:40
- The main argument for it is indispensability: our best science quantifies over numbers, so we are committed to them. Figures: Quine, Putnam.
- The main problem is Benacerraf’s challenge: how could we know about causally inert objects outside space and time?
- Neo-Fregean abstractionism — numbers exist, but “lightly”: they come for free from principles like Hume’s Principle. Figures: Bob Hale, Crispin Wright. Watch: Frege, Hume’s Principle, and Logical Ontology — BlueSpectacles · 36:32
- Structuralism — mathematics is about structures, not individual objects. There is an ante rem version (Shapiro) and an eliminative, modal version (Hellman). Watch: Structuralism (Mathematical Philosophy) — I - Dot · 19:47
- Nominalism about abstracta Watch: Abstract Objects — Daniel Bonevac · 6:08
- Fictionalism — “there are prime numbers” is true only in the story of mathematics. Figure: Hartry Field, Science Without Numbers. Read: Key Concepts, p. 72. Watch: What If All of Mathematics Is Just an Elaborate Fiction? — EJ Falconi · 9:20
- Paraphrase strategies — rewrite talk of abstracta without commitment. Read: Ney, “Applying Quine’s Method” (p. 71).
- Aristotelian realism about mathematics — numbers and shapes are real, but as features of physical things (quantities and ratios). Figure: James Franklin. Watch: James Franklin on the Philosophy of Mathematics — UNSW Mathematics & Statistics · 8:13
- Intuitionism and conceptualism — mathematical objects are mental constructions. Figure: Brouwer. Read: Key Concepts, “Psychologism” (p. 200). Watch: Setting the Record Straight on Intuitionism — K-Theory · 33:22
- Easy ontology — numbers exist, but trivially, so there is no deep question. Read: Thomasson, §8.2. Watch: Amie Thomasson: Ontology Made Easy — Books & Books · 53:17
- Propositions: traditional realism (Frege, Plantinga), nominalism about propositions (only sentences and utterances), and facts or states of affairs as the basic units of reality (Armstrong). Read: Loux & Crisp, pp. 118, 127, 139.
Study
Watch
- 4 Ways of Thinking About Abstract Objects — Philosophy Tube · 9:26
- Plato, Phaedo | Recollection and the Forms — Sadler · 11:13
- Bonus: Do Abstract Objects Threaten God’s Sovereignty? (Peter van Inwagen) — Closer To Truth · 9:01
Encyclopedia: SEP: Abstract Objects · SEP: Platonism in Metaphysics · SEP: Platonism in the Philosophy of Mathematics · SEP: Propositions · SEP: Fictionalism in the Philosophy of Mathematics · IEP: Mathematical Platonism · Wikipedia: Abstract and concrete
Read
- Core: Ney, ch. 2 “Abstract Entities” (pp. 60–88): “The Abstract/Concrete Distinction” (p. 62), “Applying Quine’s Method” (p. 71), “Mathematical Objects” (p. 81)
- Loux & Crisp, ch. 4 “Propositions and Their Neighbors” (pp. 118–148): “The Traditional Theory of Propositions” (p. 118), “Nominalism about Propositions” (p. 127), “Facts, States of Affairs, and Events” (p. 139)
- Thomasson, §8.2 “Re-Evaluating Metaphysical Debates About Abstracta” (a deflationary view; best reread after Unit 18)
- Key Concepts: Abstract vs concrete (p. 3), Platonism (p. 165), Numbers (p. 149), Fictionalism (p. 72), Proposition (p. 196), Facts (p. 71), States of affairs (p. 237), Set (p. 230)
Write: Does “there is a prime number between 2 and 5” commit you to an abstract object? Answer yes or no and defend it.
Unit 5 — Substance: What Is a Thing?
Question: Is a thing just a bundle of its properties, or is there something that has them?
Main positions
- Substratum (bare particular) theory — a thing is a propertyless bearer plus its properties. Figures: Locke (an unknown “support” of qualities), Gustav Bergmann. Read: Loux & Crisp, pp. 83, 99, 101; Key Concepts, “Substratum” (p. 239).
- Bundle theory — a thing is nothing but a bundle of co-present properties. Figures: Hume (for the self), Russell, Castañeda. Read: Loux & Crisp, pp. 83–98. Watch: What is the Bundle Theory? — Carneades.org · 10:12; Berkeley and Hume on Substance — Daniel Bonevac · 27:44
- Universal bundles face the identity-of-indiscernibles objection: two exactly similar things would be the same thing. Read: Loux & Crisp, p. 94; Crane & Farkas, Adams (p. 161). Watch: What is Leibniz’s Law? (The Identity of Indiscernibles) — Carneades.org · 5:42; What is Leibniz’s Law? (Gentleman Thinker) — Philosophy Tube · 2:33
- Trope bundles avoid it, since each trope is particular. Figures: D. C. Williams, Keith Campbell; Peter Simons’ “nuclear” theory. Watch: What is a Trope? (Philosophical Definition) — Carneades.org · 5:49
- Aristotelian substance — a substance is a basic unity of a kind (this man, this horse); properties are its accidents; the kind is not a bundle. Figures: Aristotle, Aquinas, David Wiggins (sortalism). Read: Loux & Crisp, “Aristotelian Substances” (p. 104); Feser, §3.2 (p. 210). Watch: Aristotle, The Categories: Primary and Secondary Substance — Sadler · 18:09; Substance and Accidents (Aquinas 101) — Thomistic Institute · 4:12; Aristotle on Substance — Daniel Bonevac · 28:26
- Monism — there is only one substance, of which everything else is a mode. Figure: Spinoza. Read: Moore, ch. 2, §2 “Substance” (p. 45); van Inwagen, ch. 2 “Individuality” (p. 27). Watch: The Metaphysics of Spinoza: A World of Substance, Attributes and Modes — Seekers of Unity · 36:05; Parmenides of Elea: Thought, Being, and Monism — Sadler · 14:02
- Monads — reality consists of simple, mind-like substances, each containing its whole history in its complete concept. Figure: Leibniz. Read: Leibniz, §§8–9. Watch: Leibniz on Monads — Victor Gijsbers · 22:52; The Philosophy of G. W. Leibniz (Darren Staloff) — Michael Sugrue · 47:09
- Process and event ontologies — the basic things are processes or events, not enduring things. Figures: Whitehead, and some readings of physics. Read: Feser, §3.2.3 “Physics and event ontologies” (p. 218). Watch: A History of Philosophy 61: Whitehead’s Process Philosophy (Arthur Holmes) — Wheaton College · 1:03:56
- Haecceitism — each thing has a primitive “thisness” that individuates it; the rival view holds that qualities fix identity. Read: Key Concepts, p. 89; Crane & Farkas, Adams (p. 161). Watch: What is a Haecceity? — Carneades.org · 6:52
Study
Watch
- Aristotle, The Categories | The Ten Categories — Sadler · 20:57
- Aristotle, The Categories | Primary and Secondary Substance — Sadler · 18:09
- What is Leibniz’s Law? (Gentleman Thinker) — Philosophy Tube · 2:33
Encyclopedia: SEP: Substance · SEP: The Identity of Indiscernibles · SEP: Aristotle’s Categories · IEP: Substance · Wikipedia: Substance theory · Wikipedia: Bundle theory · Wikipedia: Haecceity
Read
- Warm-up: Mumford, ch. 1 “What is a table?” (pp. 3–13)
- Core: Loux & Crisp, ch. 3 “Concrete Particulars I: Substrata, Bundles, and Substances” (pp. 82–117): “Substratum and Bundle Theories” (p. 83), “Another Objection to the Bundle Theory—the Identity of Indiscernibles” (p. 94), “Problems for the Substratum Theory” (p. 101), “Aristotelian Substances” (p. 104)
- Feser, §3.2 “Substance versus accidents” (pp. 210–219), including §3.2.2 “The empiricist critique” (p. 213); §3.3.1 “Individuation” (p. 220)
- Heil, ch. 15 “Objects” (pp. 169–178), §15.2 “Substrata”
- Leibniz, §8 (the notion of an individual substance) and §9 (each substance expresses the whole universe)
- Crane & Farkas, Part III: Locke selection (p. 155); Robert M. Adams, “Primitive Thisness and Primitive Identity” (p. 161)
- Key Concepts: Substance (p. 238), Bundle theory vs substance-attribute theory (p. 23), Substratum (p. 239), Identity of indiscernibles (p. 97), Leibniz’s Law (p. 114), Haecceitism (p. 89), Particulars (p. 157)
Write: Could there be two things exactly alike in every property? Say what your answer commits you to about substance.
Unit 6 — Change, Act and Potency, Form and Matter
Question: Parmenides argued change is impossible. How did Aristotle answer, and does the answer still work?
Main positions
- Parmenidean denial of change — what is cannot come from what is not, so change is an illusion; Zeno’s paradoxes support this. Read: Hicks, Lecture 2, §8. Watch: Parmenides of Elea: Being and Non-Being — Sadler · 14:49; Parmenides of Elea: The Two Routes or Ways — Sadler · 14:08; Zeno of Elea: Paradoxes of Motion — Sadler · 12:15
- Heraclitean flux — change is fundamental and stable identity is the illusion. Read: Hicks, Lecture 2, §9. Watch: Heraclitus of Ephesus: Strife, Opposition, and Harmony — Sadler · 20:20; The Heraclitus Paradox: Can You Step in the Same River Twice? — Carneades.org · 7:58
- Aristotelian act and potency — change is the actualization of a potency: the acorn is potentially an oak. Change is accidental (the same substance gains a new quality) or substantial (a new substance comes to be). Read: Feser, §1.1 (p. 33) and §3.1.2 (p. 181). Watch: Act and Potency (Aquinas 101) — Thomistic Institute · 3:10; Aristotle, On Interpretation: Distinctions Among Potentialities — Sadler · 13:13; Aristotle on Change: Potentiality and Actuality — Brain Sauté · 24:56
- Hylomorphism — every material substance is a composite of matter (what it is made of) and form (what makes it the kind of thing it is); prime matter underlies substantial change. Read: Feser, §3.1 (p. 177) and §3.1.3 (p. 189). Watch: Form and Matter (Aquinas 101) — Thomistic Institute · 3:07; Substantial Form (Aquinas 101) — Thomistic Institute · 10:17; Aristotle: Matter, Form and the Four Causes — Peter Brown · 5:58
- Mechanism and atomism — change is just the rearrangement of unchanging particles; there are no substantial forms. Figures: Democritus, Descartes, Boyle. Read: Feser, §3.1.5 “Hylemorphism versus atomism” (p. 196). Watch: Robert Boyle’s Corpuscularian Theory — University of Oxford · 6:21; The Atomists (A History of Western Thought 7) — Dr. Jordan B Cooper · 8:27
- The new Aristotelianism about powers — contemporary analytic philosophers revive real causal powers without full hylomorphism. Figures: Mumford, Molnar, Heil. Read: Feser, §1.2.2 (p. 51). Watch: Act and Potency and the Ontology of Causal Powers in Feser — Brent Kalar · 1:01:03; Rob Koons: Aristotle and the Quantum — Biola University · 49:05
- Four-dimensionalism — change is just having different temporal parts at different times (see Unit 11). Watch: Four-Dimensionalism Explained (Temporal Parts & Time Worms) — Philosophy Vibe · 16:39
- Process philosophy — becoming is more basic than being. Figures: Bergson, Whitehead. Read: Moore, ch. 16 “Bergson” (p. 406). Watch: Bergson’s Élan Vital and Vitalism — Michael Sugrue · 45:15
- On the four causes: the Aristotelian keeps formal and final causes (teleology); the modern mechanist keeps only efficient (and material) causes. Read: Feser, §2.1 (p. 96) and §2.2 (p. 101). Watch: Aristotle, Metaphysics bk. 1: Metaphysics and the Four Causes — Sadler · 15:40; The Four Causes (Aquinas 101) — Thomistic Institute · 4:12
Study
Watch
- Zeno of Elea | Paradoxes of Motion — Sadler · 12:15
- Aristotle, Metaphysics bk. 1 | Metaphysics and the Four Causes — Sadler · 15:40
- Aristotle, The Categories | Six Types of Motion or Change — Sadler · 12:28
- Bonus: Act and Potency (Aquinas 101) — The Thomistic Institute · 3:10
- Bonus: Form and Matter (Aquinas 101) — The Thomistic Institute · 3:07
Encyclopedia: SEP: Aristotle’s Metaphysics · SEP: Form vs. Matter · SEP: Aristotle on Causality · IEP: Aristotle: Metaphysics · Wikipedia: Potentiality and actuality · Wikipedia: Hylomorphism · Wikipedia: Four causes
Read
- Warm-up: Mumford, ch. 4 “What is a change?” (pp. 34–43)
- Core: Feser, ch. 1 “Act and potency”, §1.1 “The general theory” (pp. 33–44)
- Core: Feser, ch. 3 “Substance”, §3.1 “Hylemorphism” (pp. 177–209): §3.1.1 “Form and Matter” (p. 177), §3.1.2 “Substantial form versus accidental form” (p. 181)
- Feser, ch. 2, §2.1 “Efficient versus final causality” (p. 96) and §2.2 “The principle of finality” (p. 101)
- Leibniz, §10 (substantial forms), §11 (don’t despise the Scholastics), §12 (extension can’t be the whole of body)
- Key Concepts: Form and matter (p. 78), Aristotle (p. 11)
- Already in your vault: Hicks, Lecture 2, §§7–10 (Parmenides, Zeno, Heraclitus, Aristotle on change)
Write: Explain act and potency using an acorn, then say whether modern science still needs the distinction.
Unit 7 — Possibility and Necessity
Question: What makes it true that you could have been a lawyer? Are other possible worlds real places?
Key terms: modality · possible worlds · modal realism (Lewis) · actualism (Plantinga) · counterparts
Main positions
- Modal realism — possible worlds are concrete universes just as real as ours; “possible” means “true at some world”. You exist only in this world, but have counterparts elsewhere. Figure: David Lewis. Read: Loux & Crisp, p. 162; Moore, ch. 13, §3 (p. 335); Crane & Farkas, Lewis (p. 330). Watch: Are Possible Worlds Real? Modal Realism Part 1 — Philosophy Tube · 9:21; “Another Earth” and the Humphrey Objection, Modal Realism Part 2 — Philosophy Tube · 9:38; Possible Worlds and Modal Realism (Explained and Debated) — Philosophy Vibe · 15:13; David Lewis’s On the Plurality of Worlds, Sections 1.1–1.3 — Victor Gijsbers · 44:49
- Actualism and ersatzism — only actual things exist; possible worlds are actually existing abstract representations. Watch: What are Possible Worlds? — Jeffrey Kaplan · 8:45; Peter van Inwagen: What are Possible Worlds? (Part 2) — Closer To Truth · 11:10
- Maximal states of affairs (Plantinga). Read: Loux & Crisp, p. 168; Crane & Farkas, Plantinga (p. 334). Watch: Alvin Plantinga: What are Possible Worlds? — Closer To Truth · 6:55
- Linguistic ersatzism — worlds are maximal consistent sets of sentences. Read: Ney, “Ersatz Modal Realism” (p. 202). Watch: Possible Worlds (lecture) — Simon Cushing · 1:15:45
- Combinatorialism — possibilities are recombinations of actual objects and properties. Figure: Armstrong. Read: Crane & Farkas, Armstrong (p. 350).
- Modal fictionalism — possible-world talk is true “according to the fiction” of many worlds. Figure: Gideon Rosen.
- Modal primitivism or modalism — “possibly” and “necessarily” are basic; worlds are at most a useful model. Figures: Prior, Fine. Read: Ney, “Rejecting the Possible Worlds Analysis” (p. 207).
- Essence-based modality — necessity is grounded in the essences of things, not the other way round. Figure: Kit Fine, “Essence and Modality” (1994). Read: Ney, p. 215; Feser, §4.1.5 (p. 261). Watch: The Metaphysics of Essence — Kane B · 36:25
- Conventionalism and skepticism — necessity reflects linguistic convention (Ayer; Alan Sidelle), or de re modality is unintelligible (Quine). Watch: Quine on Modality — Daniel Bonevac · 45:29; Quine’s Objections to Modal Logic 1: Historical Background — Kane B · 13:11
- Kinds of modality: logical, metaphysical, nomological (physical) and epistemic possibility. Read: Ney, “Species of Possibility and Necessity” (p. 191). Watch: Aristotle, On Interpretation: Possible, Contingent, Impossible, and Necessary Propositions — Sadler · 12:43; What is Modality? — Carneades.org · 4:11; Modal Concepts and Possible Worlds — Thinking illustrated · 13:49
- Transworld identity vs counterpart theory — whether the same individual exists in many worlds, or only resembling counterparts do. Read: SEP: Transworld Identity. Watch: Transworld Identity (Plantinga) — BlueSpectacles · 14:35; Counterpart Theory and Quantified Modal Logic (Lewis) — BlueSpectacles · 22:47
Study
Watch
- What are Possible Worlds? (Gentleman Thinker) — Philosophy Tube · 1:48
- Are Possible Worlds Real? Modal Realism Part 1 — Philosophy Tube · 9:21
- “Another Earth” and the Humphrey Objection, Modal Realism Part 2 — Philosophy Tube · 9:38
- Aristotle, On Interpretation | Possible, Contingent, Impossible, and Necessary Propositions — Sadler · 12:43
- Bonus: What are Possible Worlds? — Jeffrey Kaplan · 8:45
Encyclopedia: SEP: Possible Worlds · SEP: The Possibilism-Actualism Debate · SEP: Varieties of Modality · SEP: David Lewis’s Metaphysics · Wikipedia: Possible world · Wikipedia: Modal realism
Read
- Warm-up: Mumford, ch. 8 “What is possible?” (pp. 76–86)
- Core: Loux & Crisp, ch. 5 “The Necessary and the Possible” (pp. 149–180): “Problems about Modality” (p. 150), “Possible Worlds” (p. 154), “The Metaphysics of Possible Worlds Nominalism—David Lewis” (p. 162), “Actualism and Possible Worlds—Alvin Plantinga” (p. 168)
- Ney, ch. 7 “Modality” (pp. 190–210): “The Possible Worlds Analysis of Modality” (p. 193), “Ersatz Modal Realism” (p. 202), “Rejecting the Possible Worlds Analysis” (p. 207)
- Crane & Farkas, Part V: Lewis, On the Plurality of Worlds selection (p. 330); Plantinga, “Actualism and Possible Worlds” (p. 334); Armstrong, A Combinatorial Theory of Possibility selection (p. 350)
- Moore, ch. 13 “Lewis”, §3 “Modal Realism” (p. 335) and §4 (p. 339); ch. 3 “Leibniz”, §4 “Leibniz’ Various Modal Distinctions” (p. 78)
- Leibniz, §13 (the complete concept of Caesar; certain but contingent truths)
- Key Concepts: Modality (p. 126), Possible worlds (p. 167), Modal realism (p. 127), Possibility (p. 171), Necessity (p. 139), Contingent truths (p. 52), Possibilia (p. 167)
Write: State the “incredulous stare” objection to Lewis, then give his best reply.
Unit 8 — Essence and Essentialism
Question: Could you have had different parents and still been you?
Main positions
- Real (Aristotelian) essentialism — things belong to kinds with real essences, which explain what they are and how they behave. Figures: Aristotle, Aquinas, David Oderberg. Read: Feser, §4.1.1 (p. 234). Watch: Essence and Existence (Aquinas 101) — Thomistic Institute · 4:52; Aristotle on Essence — Daniel Bonevac · 23:36
- Modal essentialism — an essential property is one a thing has in every world where it exists. Figures: Kripke, Plantinga. Read: Ney, “Essentialism Today” (p. 213). Watch: Batman & Identity: Crash Course Philosophy #18 — Crash Course · 9:09; Essential Properties — Daniel Bonevac · 14:29
- Kripkean scientific essentialism — natural kinds have hidden essences discovered empirically, giving necessary truths known a posteriori (“water is H₂O”); your origin is essential to you. Figures: Kripke, Putnam. Read: Crane & Farkas, Kripke (p. 313); Key Concepts, pp. 136, 139. Watch: Naming and Necessity by Saul Kripke, Part 1 — Jeffrey Kaplan · 22:35; Kripke’s Necessary, A Posteriori Statements — Carneades.org · 3:56; Kripke on Essential Properties — Daniel Bonevac · 45:42
- Definitional (Finean) essentialism — essence is what a thing is, its real definition; necessity follows from essence, not vice versa. Figure: Kit Fine. Read: Ney, p. 215. Watch: The Metaphysics of Essence — Kane B · 36:25
- Dispositional essentialism — properties have their causal powers essentially, so the laws of nature are metaphysically necessary. Figures: Alexander Bird, Brian Ellis (see Unit 9). Watch: Alexander Bird: The Structure and the Necessity of the Natural Laws — Royal Institute of Philosophy · 1:06:45
- Anti-essentialism
- Quine — whether a property is essential depends on how the thing is described (his “mathematical cyclist” example). Read: Ney, “Essentialism and Anti-essentialism” (p. 211); Feser, §4.1.2 (p. 240). Watch: Quine on Modality — Daniel Bonevac · 45:29
- Locke — nominal essences (our sorting concepts) versus real essences, which are unknown to us. Watch: Nominal and Real Essences — Daniel Bonevac · 37:08
- Existentialism — for human beings “existence precedes essence” (Sartre, Existentialism Is a Humanism, 1946). Watch: Existentialism: Crash Course Philosophy #16 — Crash Course · 8:54; Sartre, Existentialism Is a Humanism: Existence Precedes Essence — Sadler · 18:27
- Essence and existence — Aquinas held that in every created thing its essence is really distinct from its act of existing; Scotus and Suárez weakened or denied the distinction. Read: Feser, §4.2 (p. 267). Watch: Essence and Existence (Aquinas 101) — Thomistic Institute · 4:52; The Real Distinction (Aquinas 101) — Thomistic Institute · 3:09
Study
Watch
- Batman & Identity: Crash Course Philosophy #18 — Crash Course (essential vs accidental properties)
- Rene Descartes Meditation 5 | True and Immutable Natures — Sadler · 13:46
- Bonus: Naming and Necessity by Saul Kripke — Part 1 — Jeffrey Kaplan · 22:35
Encyclopedia: SEP: Essential vs. Accidental Properties · SEP: Natural Kinds · Wikipedia: Essence · Wikipedia: Essentialism · Wikipedia: Rigid designator
Read
- Core: Ney, ch. 7: “Essentialism and Anti-essentialism” (p. 211), “Essentialism Today” (p. 213), “The Relation between Essence and Necessity” (p. 215)
- Core: Feser, ch. 4 “Essence and existence”, §4.1 “Essentialism” (pp. 234–266): §4.1.1 “The reality of essence” (p. 234), §4.1.2 “Anti-essentialism” (p. 240), §4.1.5 “Modality” (p. 261), §4.1.6 “Essentialism in contemporary analytic metaphysics” (p. 263)
- Feser, §4.2 “The real distinction” between essence and existence (p. 267)
- Crane & Farkas, Part V: Kripke, Naming and Necessity selection (p. 313)
- Key Concepts: Essence (p. 63), Necessary a posteriori truths (p. 136), Necessity of origin thesis (p. 139), Natural kinds (p. 134), Kripke, Saul (p. 113), Sortals (p. 235)
Write: Give Kripke’s argument that water is necessarily H₂O in three steps, then say which step you’d attack.
Unit 9 — Causation, Laws and Powers
Question: Is causation just one thing regularly following another (Hume), or real powers in things?
Main positions: causation
- Regularity theory — causation is constant conjunction plus contiguity and temporal priority; there is no necessary connection “out there”. Figures: Hume; Mackie’s INUS conditions. Read: Loux & Crisp, p. 181; Key Concepts, pp. 217, 111. Watch: Hume, Enquiry: Experience and Cause and Effect — Sadler · 17:06; Hume, Enquiry: Possible Source of the Idea of Power — Sadler · 15:33; Hume on Causation and Necessity — Daniel Bonevac · 17:25; The Nature of Causation: The Regularity Theory — Philosophy Overdose · 1:32:01
- Counterfactual theory — c causes e if e would not have happened without c (with chains of dependence). Figure: Lewis (1973). Read: Crane & Farkas, Lewis (p. 390); Key Concepts, p. 54. The main trouble cases are pre-emption and overdetermination (Key Concepts, pp. 174, 154). Watch: The Nature of Causation: The Counterfactual Theory of Causation — Philosophy Overdose · 1:35:39; Barry Loewer: What is Causation? — Closer To Truth · 7:32
- Probabilistic theories — causes raise the probability of their effects. Figures: Suppes, Eells. Read: Key Concepts, p. 185.
- Process or transference theories — causation is the transfer of a conserved quantity such as energy or momentum. Figures: Wesley Salmon, Phil Dowe. Read: Ney, “Physical Theories of Causation” (p. 232); Key Concepts, p. 193.
- Interventionism — c causes e if intervening on c would change e. Figure: James Woodward. Read: SEP: Causation and Manipulability. Watch: Causation from the Point of View of Physics (James Woodward) — Yale University · 1:14:54
- Powers theories — causation is the manifestation of real powers in things, which work together. Figures: Aristotle, Aquinas; today Mumford and Anjum, Molnar, Heil. Read: Feser, §1.2 (p. 45); Heil, ch. 8 (p. 75). Watch: Act, Potency, Causal Powers, and Natural Laws in Feser — Brent Kalar · 1:01:10; Aristotle, The Categories: Qualities, Habits, and Dispositions — Sadler · 17:31
- Singularism and primitivism — causation is a basic, local relation, not reducible to regularities. Figures: Anscombe, Tooley. Read: Key Concepts, “Singularism” (p. 233). Watch: Elizabeth Anscombe: Causality and Determination — Victor Gijsbers · 43:28
- Kant — causation is a necessary category our understanding imposes on experience (see the Sadler video above). Watch: Kant, Prolegomena: Removing Hume’s Doubt About Causality — Sadler · 16:18; Kant and Causality: An Introduction to the Transcendental Deduction — Ed · 10:20
- Eliminativism — Russell (1913): “The law of causality … is a relic of a bygone age, surviving, like the monarchy, only because it is erroneously supposed to do no harm.” Read: Feser, §2.3.2.2 “Russell’s objection” (p. 126).
- Occasionalism and pre-established harmony — only God truly causes (al-Ghazali, Malebranche); or substances never interact and God harmonizes them in advance (Leibniz). Read: Leibniz, §§14–15. Watch: Hume, Enquiry: Rejection of Divine Occasionalism — Sadler · 14:33; Malebranche on Causality and Theology (#286) — The Partially Examined Life · 57:33
Main positions: laws of nature
- Humean regularity and “best system” views — laws are the axioms of the simplest, strongest summary of what happens. Figures: Mill, Ramsey, Lewis. Read: Key Concepts, “Ramsey–Lewis view of laws” (p. 205) and “Regularity theory of laws of nature” (p. 219). Watch: Laws of Nature: The Best System Analysis — Kane B · 46:23
- Governing (necessitation) views — laws are relations of necessitation between universals. Figures: Dretske, Tooley, Armstrong. Read: Key Concepts, p. 59. Watch: Laws of Nature 2 — Kane B · 36:14; Why the Laws of Nature? (Episode 411) — Closer To Truth · 26:47
- Dispositional essentialism — laws flow from the natures of properties; Mumford even argues there are no laws over and above powers. Figures: Bird, Ellis, Mumford. Read: Feser, §1.2.2.4 (p. 75); Heil, §9.5 (p. 95). Watch: Alexander Bird: The Structure and the Necessity of the Natural Laws — Royal Institute of Philosophy · 1:06:45
- Anti-realism about laws — Bas van Fraassen (Laws and Symmetry) and Nancy Cartwright (How the Laws of Physics Lie). Watch: Bas van Fraassen: What is the Origin of the Laws of Nature? — Closer To Truth · 10:18
Study
Watch
- David Hume, Enquiry | Experience and Cause and Effect — Sadler · 17:06
- David Hume, Enquiry | Possible Source of the Idea of Power — Sadler · 15:33
- Hume’s Skepticism and Induction, Part 1 — Wi-Phi · 4:34
- Contrastivism #3 (Causation) — Wi-Phi · 6:41
- Kant, Prolegomena | Removing Hume’s Doubt About Causality — Sadler · 16:18
- Bonus: What is Causation? (Episode 1511) — Closer To Truth · 26:47
Encyclopedia: SEP: The Metaphysics of Causation · SEP: Counterfactual Theories of Causation · SEP: Regularity and Inferential Theories of Causation · SEP: Laws of Nature · SEP: Dispositions · IEP: Causation · IEP: Laws of Nature · Wikipedia: Causality
Read
- Warm-up: Mumford, ch. 5 “What is a cause?” (pp. 44–54)
- Core: Loux & Crisp, ch. 6 “Causation” (pp. 181–197): “Hume’s Account of Causation” (p. 181), “The Response to Hume” (p. 186), “Neo-Humean Approaches” (p. 189)
- Ney, ch. 8 “Causation” (pp. 217–238): “Three Reductive Theories of Causation” (p. 223), “Physical Theories of Causation” (p. 232)
- Powers view: Feser, §1.2 “Causal powers” (pp. 45–78), including §1.2.2.4 “Powers and laws of nature” (p. 75); §2.3 “The principle of causality” (p. 116), including §2.3.2.1 “Hume’s objection” (p. 120)
- Heil, ch. 8 “Powers” (pp. 75–84) and ch. 9 “Dispositional and Categorical Properties” (pp. 85–96), §9.5 “What Is a Law of Nature?” (p. 95)
- Crane & Farkas, Part VI: Aristotle (p. 380), Hume (p. 382), Lewis, “Causation” (p. 390), Davidson, “Causal Relations” (p. 401), Mellor (p. 412)
- Leibniz, §§14–15 (substances don’t act directly on one another) and §§17–18 (force vs quantity of motion)
- Key Concepts: Regularity theory of causation (p. 217), Counterfactual theory of causation (p. 54), Humeanism (p. 93), Humean supervenience (p. 93), Dispositional properties (p. 59), Categorical and dispositional properties (p. 29), Law of nature (p. 114), Dretske–Tooley–Armstrong view of laws (p. 59), Ramsey–Lewis view of laws (p. 205), Pre-emption (p. 174), Causation by absence (p. 33)
Write: Give one case that breaks the counterfactual theory (pre-emption works well) and say what it shows.
Unit 10 — Time
Question: Do the past and future exist, or only the present? Does time really pass?
Key terms: A-theory · B-theory · McTaggart · presentism · eternalism · growing block · time travel
Main positions
- A-theories (tensed time) — there is an objective present, and time really passes. Watch: Eternalism, Presentism, and the Growing Block — Victor Gijsbers · 13:45; Does Time Pass? — Philosophy Tube · 10:38
- Presentism — only present things exist. Figures: A. N. Prior, Ned Markosian, Thomas Crisp. Read: Key Concepts, p. 177; van Inwagen, ch. 4. Watch: Does the Future Exist? — Philosophy Tube · 12:33; What is Presentism? — Carneades.org · 5:08
- Growing block — the past and present exist; the future doesn’t yet, and the block grows. Figures: C. D. Broad, Michael Tooley. Read: Key Concepts, p. 86. Watch: Do the Past and Future Exist? — PBS Space Time · 16:06
- Moving spotlight — all times exist, but one is objectively privileged as “now”. Read: Key Concepts, p. 133. Watch: William Lane Craig on the Moving Spotlight Theory of Time — drcraigvideos · 3:27
- B-theory (tenseless time) and eternalism — past, present and future are equally real; “now” is like “here”. Figures: Russell, J. J. C. Smart, D. H. Mellor. Read: Loux & Crisp, p. 205; Crane & Farkas, Smart (p. 496). Watch: What Is Time? Sean Carroll Explains Presentism and Eternalism — The Great Courses · 30:17; Eternalism, Presentism, and the Growing Block — Victor Gijsbers · 13:45
- The new B-theory — tensed sentences can’t be translated into tenseless ones, but their truth conditions are tenseless. Figures: Mellor, Smart. Read: Loux & Crisp, p. 216. Watch: The A Series vs The B Series — Carneades.org · 5:19
- The unreality of time — McTaggart argued that the A-series is contradictory and that without it there is no time. Read: Loux & Crisp, p. 198; Crane & Farkas, McTaggart (p. 454). Watch: Is Time Real? — Philosophy Tube · 9:19; J. Ellis McTaggart: The Unreality of Time — Victor Gijsbers · 26:43
- The argument from relativity — special relativity seems to rule out an absolute present, which counts against presentism. Read: Ney, p. 140. Watch: Do the Past and Future Exist? — PBS Space Time · 16:06; Relativity of Simultaneity — minutephysics · 3:48
- Absolute vs relational time — time is a container that would exist without events (Newton, Clarke) or just the ordering of events (Leibniz). Read: Crane & Farkas, Leibniz–Clarke correspondence (p. 486). Watch: Newton vs. Leibniz on Time and Space — DJW Philosophy · 47:56
- Kant — time is a form of our intuition, not a feature of things in themselves. Watch: Kant on Space, Part 1 — Wi-Phi · 7:13; Kant on Space, Part 2 — Wi-Phi · 5:19; Kant, Prolegomena: Intuitions, Space, and Time — Sadler · 15:08
- Time travel — possible and consistent (Lewis) versus ruled out by the grandfather paradox. Read: Crane & Farkas, Lewis (p. 510); Ney, p. 162; Key Concepts, p. 86. Watch: The Grandfather Paradox — Wi-Phi · 8:57; David Lewis on the “Logical Problem of Time Travel” — Beth Seacord · 9:37; Time Travel (lecture) — Simon Cushing · 56:56
- The direction of time — whether the arrow of time is fundamental or just the direction of increasing entropy. Read: Key Concepts, p. 57; Crane & Farkas, Horwich (p. 474). Watch: The Arrow of Time feat. Sean Carroll — minutephysics · 1:50; The Arrow of Time and How to Reverse It — PBS Space Time · 14:21
Study
Watch
- Is Time Real? — Philosophy Tube · 9:19
- Does Time Pass? — Philosophy Tube · 10:38
- Does the Future Exist? — Philosophy Tube · 12:33
- The Grandfather Paradox — Wi-Phi · 8:57
- Aristotle, The Categories | Space, Time, and Number — Sadler · 13:39
- Bonus: The A Series vs The B Series (Unreality of Time) — Carneades.org · 5:19
- Bonus: What’s Real About Time? (Episode 510) — Closer To Truth · 26:47
Encyclopedia: SEP: Time · SEP: Presentism · SEP: Time Travel · SEP: Being and Becoming in Modern Physics · IEP: Time · IEP: Time Travel · Wikipedia: A series and B series · Wikipedia: Eternalism · Wikipedia: Philosophical presentism · Wikipedia: Growing block universe
Read
- Warm-up: Mumford, ch. 6 “How does time pass?” (pp. 55–64)
- Core: Loux & Crisp, ch. 7 “The Nature of Time” (pp. 198–222): “McTaggart’s Argument” (p. 198), “The B-Theory” (p. 205), “The A-Theory” (p. 209), “The New B-Theory” (p. 216)
- Ney, ch. 5 “Time” (pp. 138–169): “The Argument against the Ordinary View from Special Relativity” (p. 140), “Ontologies of Time” (p. 142), “The Truthmaker Objection” (p. 152), “Time Travel” (p. 162)
- van Inwagen, ch. 4 “Temporality” (pp. 71–106), newly revised in this edition and including presentism
- Crane & Farkas, Part VII: McTaggart (p. 454), Prior, “Changes in Events and Changes in Things” (p. 464), Smart, “The Space-Time World” (p. 496), Lewis, “The Paradoxes of Time Travel” (p. 510)
- Key Concepts: A-theory (p. 12), B-theory (p. 21), McTaggart (p. 119), Unreality of time (p. 267), Presentism (p. 177), Eternalism (p. 65), Growing block theory (p. 86), Moving spotlight theory (p. 133), Flow of time (p. 77), Tensed and tenseless theories (p. 245), Time travel (p. 253), Grandfather paradox (p. 86)
- Already in your vault: Hicks, Lecture 2, §§12–15 (Newton, Einstein, Hume and Kant on space and time)
Write: Give McTaggart’s argument in four premises and say which one the B-theorist rejects.
Unit 11 — Persistence: Lasting Through Change
Question: When a banana ripens, is the same banana wholly present at each moment, or is it a four-dimensional thing with temporal parts?
Main positions
- Endurantism (three-dimensionalism) — a persisting thing is wholly present at every moment it exists. Figures: Chisholm, van Inwagen, Lowe. Read: Loux & Crisp, p. 223; Crane & Farkas, Chisholm (p. 537). Watch: What are Temporal Parts? (Perdurantism and Endurantism) — Carneades.org · 5:02; Persistence Through Time (lecture) — Simon Cushing · 1:12:34
- Replies to the problem of change: properties are relations to times, or they are had “time-ly” (adverbialism). Read: Ney, “Defending Three Dimensionalism” (p. 185).
- Perdurantism (four-dimensionalism, “worm” theory) — a thing is a four-dimensional whole extended in time as well as space, with different temporal parts at different times. Figures: Quine, Lewis, Mark Heller. Read: Loux & Crisp, pp. 231, 235, 239; Key Concepts, p. 158. Watch: Four-Dimensionalism Explained (Temporal Parts & Time Worms) — Philosophy Vibe · 16:39
- The key argument is the problem of temporary intrinsics: one banana can’t be both green and yellow, but two temporal parts can. Figure: Lewis. Read: Ney, p. 178; Crane & Farkas, Lewis (p. 552).
- Exdurantism (stage theory) — ordinary things are instantaneous stages that persist by having temporal counterparts. Figures: Ted Sider, Katherine Hawley. Read: Ney, “Exdurantism” (p. 183). Watch: Persistence Through Time (lecture) — Simon Cushing · 1:12:34
- Identity as primitive (anti-criterialism) — there is no informative criterion of identity over time. Figures: Chisholm; Feser (for substances). Read: Feser, §3.3.2.2 (p. 230); Key Concepts, “Anti-criterialism” (p. 10).
- Scholastic view — a substance persists because its substantial form persists; four-dimensionalism is rejected. Read: Feser, §3.3.2.1 (p. 223). Watch: Substantial Form (Aquinas 101) — Thomistic Institute · 10:17
- The Ship of Theseus — the candidates are continuity of material, continuity of form or function, “both ships” (coincident objects), and “no fact of the matter” (conventionalism). Watch: Ship of Theseus — Wi-Phi · 8:07; Batman & Identity: Crash Course Philosophy #18 — Crash Course · 9:09; The Paradox of Theseus’s Ship (90 Second Philosophy) — Carneades.org · 1:33
Study
Watch
- Ship of Theseus — Wi-Phi · 8:07
- Batman & Identity: Crash Course Philosophy #18 — Crash Course (rewatch from Unit 8; it opens with the Ship of Theseus)
- Bonus: What are Temporal Parts? (Perdurantism and Endurantism) — Carneades.org · 5:02
Encyclopedia: SEP: Temporal Parts · SEP: Identity Over Time · IEP: Persistence in Time · Wikipedia: Perdurantism · Wikipedia: Endurantism · Wikipedia: Ship of Theseus
Read
- Core: Loux & Crisp, ch. 8 “Concrete Particulars II: Persistence through Time” (pp. 223–249): “Two Theories of Persistence—Endurantism and Perdurantism” (p. 223), “Persistence and the Nature of Time” (p. 227), “An Argument for Perdurantism—Change in Properties” (p. 235), “A Second Argument for Perdurantism—Change in Parts” (p. 239)
- Ney, ch. 6 “Persistence” (pp. 170–189): “The Problem of Temporary Intrinsics” (p. 178), “Exdurantism” (p. 183), “Defending Three Dimensionalism” (p. 185)
- Against four-dimensionalism: Feser, §3.3.2 “Persistence” (pp. 223–233), including §3.3.2.1 “Against four-dimensionalism” (p. 223) and §3.3.2.2 “Identity as primitive” (p. 230)
- Crane & Farkas, Part VIII: Chisholm, “Identity Through Time” (p. 537); Lewis, On the Plurality of Worlds selection on temporary intrinsics (p. 552)
- Key Concepts: Persistence (p. 161), Endurantism (p. 62), Perdurantism (p. 158), Temporal parts (p. 244), Temporary intrinsics (p. 245), Four-dimensionalism (p. 79), Identity over time (p. 97), Ship of Theseus (p. 230)
Write: Which ship is the Ship of Theseus, the repaired one or the one rebuilt from the old planks? Say what your answer commits you to.
Unit 12 — Parts and Wholes
Question: When do several things make up one further thing? Always, never, or only sometimes (for example, when they make up a life)?
Key terms: special composition question · mereological nihilism · universalism · constitution · problem of the many · vagueness
Main positions: composition (the special composition question)
- Mereological nihilism — composition never happens; there are only simples “arranged table-wise”. Figures: Peter Unger, Cian Dorr, Ted Sider (in some work). Read: Loux & Crisp, p. 253; Ney, p. 110. Watch: How to Count All the Objects in the Universe — Philosophy Tube · 11:56; Mereological Nihilism: Why Objects Don’t Exist — More Alex O’Connor · 5:51; Apples Don’t Exist — Majesty of Reason · 13:29
- Moderate answers — composition happens only sometimes. Watch: What is the Special Composition Question? — Taylor & Francis Books · 17:15; When Do Objects Compose Another? The Special Composition Question — Thinking illustrated · 20:23
- Organicism — simples compose something only when their activity constitutes a life, so there are organisms but no tables. Figure: van Inwagen, Material Beings. Read: Loux & Crisp, p. 255; Crane & Farkas, van Inwagen (p. 193). Watch: Peter van Inwagen: What Things Really Exist? — Closer To Truth · 10:10; Peter van Inwagen: Is the Person All Material? — Closer To Truth · 14:41
- Merricks’s eliminativism — there are no inanimate composites, but there are conscious persons.
- Contact, fastening or cohesion answers, which van Inwagen rejects. Read: Ney, p. 105. Watch: Do Composite Objects Exist? (Eric Olson) — Majesty of Reason · 43:44
- Brutal composition — there’s no principled answer; it just happens when it does. Figure: Ned Markosian.
- Mereological universalism — any objects whatever compose a further object (for example, your nose plus the Eiffel Tower). Figures: Lewis, Sider. Read: Loux & Crisp, p. 263; Ney, p. 112; Key Concepts, p. 268. Watch: What is the Special Composition Question? — Taylor & Francis Books · 17:15
- Common-sense ordinary-objects views — tables and cats exist, trout-turkeys don’t. Read: SEP: Ordinary Objects. Watch: Metaphysics: Ordinary Objects — Kane B · 1:04:02; Do Tables & Chairs Really Exist? Controversy over Ordinary Objects — Philosophy Overdose · 45:30
Main positions: material constitution (the statue and the clay)
- Constitution view — the statue and the lump are two distinct things in one place. Figures: Lynne Rudder Baker, David Wiggins, Kit Fine. Read: Loux & Crisp, p. 264; Heil, §16.8 (p. 190). Watch: The Puzzle of Material Constitution (Part 1 of 5) — Jason Bowers · 13:55; David Pitt: How to Tell a Statue from a Lump (Part 1) — Plato For The Masses · 14:22
- Identity views — they are one thing: contingent identity (Allan Gibbard) or counterpart theory (Lewis).
- Relative identity — “same statue” and “same lump” can come apart. Figure: Peter Geach. Read: Loux & Crisp, p. 269.
- Eliminativism — there are no statues (or no lumps). Figures: van Inwagen, Merricks. Read: Heil, §16.4 (p. 183). Watch: The Puzzle of Material Constitution (3/5): Mereological Nihilism and Cohabitation Theory — Jason Bowers · 17:08
- Perdurantist solution — the statue and the lump share temporal parts, like two overlapping roads. Read: Ney, p. 175.
Main positions: wholes and vagueness
- Reductionism vs emergence — a whole is nothing over and above its parts, or it has emergent properties (“weak” emergence only surprises us; “strong” emergence is new and irreducible). Read: Mumford, ch. 3; SEP: Emergent Properties. Watch: Emergence — Wi-Phi · 5:40; David Chalmers: Why is Emergence Significant? — Closer To Truth · 12:43; Tim Maudlin: What is Strong Emergence? — Closer To Truth · 12:14
- Theories of vagueness — epistemicism (Timothy Williamson), supervaluationism (Kit Fine) and metaphysical vagueness (Gareth Evans argues against vague identity). Read: Loux & Crisp, ch. 10 (pp. 283, 295); Crane & Farkas, Evans (p. 209) and Lewis (p. 210). Watch: The Sorites Paradox & Vagueness — Thinking About Stuff · 4:21; Timothy Williamson on Relativism and Vagueness — Philosophical Trials · 1:10:31
- Atoms vs gunk — whether everything is ultimately made of simples, or divisible forever. Read: Key Concepts, “Gunk” (p. 88).
Study
Watch
- How to Count All the Objects in the Universe — Philosophy Tube · 11:56
- Emergence — Wi-Phi · 5:40
- Bonus: Peter van Inwagen — What Things Really Exist? — Closer To Truth · 10:10
- Bonus: What is the Special Composition Question? — Taylor & Francis Books · 17:15
Encyclopedia: SEP: Mereology · SEP: Material Constitution · SEP: The Problem of the Many · SEP: Ordinary Objects · SEP: Emergent Properties · SEP: Vagueness · Wikipedia: Mereology · Wikipedia: Mereological nihilism · Wikipedia: Emergence
Read
- Warm-up: Mumford, ch. 3 “Are wholes just sums of parts?” (pp. 24–33)
- Core: Ney, ch. 3 “Material Objects” (pp. 89–118): “The Paradoxes of Material Constitution” (p. 91), “The Special Composition Question” (p. 103), “Mereological Nihilism” (p. 110), “Mereological Universalism” (p. 112), “Vagueness” (p. 114)
- Loux & Crisp, ch. 9 “Concrete Particulars III: Parts and Wholes” (pp. 250–278): “The Problem of the Many” (p. 251), “Mereological Nihilism” (p. 253), “Mereological Moderatism” (p. 255), “Constitution Metaphysics” (p. 264)
- Loux & Crisp, ch. 10 “Metaphysical Indeterminacy” (pp. 279–303): “Composition and Metaphysical Indeterminacy” (p. 287), “Evans’s Argument Against Vague Identity” (p. 295)
- Heil, ch. 16 “Substantial Identity” (pp. 179–194): §16.4 “‘Overlapping Objects’ and Eliminativism” (p. 183), §16.8 “Material Constitution” (p. 190), §16.9 “Eddington’s Tables” (p. 191)
- Feser, §3.1.6 “Anti-reductionism in contemporary analytic metaphysics” (p. 204)
- Crane & Farkas, Part III: van Inwagen, Material Beings selection (p. 193); Evans, “Can There Be Vague Objects?” (p. 209); Lewis, “Vague Identity: Evans Misunderstood” (p. 210)
- Key Concepts: Mereology (p. 121), Special composition question (p. 236), Nihilism (p. 145), Universalism (p. 265), Unrestricted mereological composition (p. 268), Gunk (p. 88), Simple (p. 231), Overlap (p. 155)
Write: Give van Inwagen’s answer to the special composition question and the strangest thing it implies (hint: tables).
Unit 13 — Personal Identity
Question: What makes you, now, the same person as the child in your old photos? Memory, body, soul, or nothing deep at all (Parfit)?
Main positions
- Psychological continuity — you are the same person as whoever is connected to you by overlapping chains of memory, intention and character. Figures: Locke (memory), Sydney Shoemaker, Parfit’s “Relation R”. Read: Key Concepts, pp. 197, 120. Watch: Personal Identity: Crash Course Philosophy #19 — Crash Course · 8:33; Locke on Personal Identity #1 — Wi-Phi · 11:31; Personal Identity 1: Psychological Continuity — Kane B · 43:17
- Animalism — you are a human animal and persist as long as that organism lives. Figures: Eric Olson, Paul Snowdon, van Inwagen. Read: Crane & Farkas, Snowdon (p. 578); Key Concepts, p. 7. Watch: Personal Identity 2: Animalism — Kane B · 41:25
- Bodily or brain views — you go where your body, or your brain, goes. Figure: Jeff McMahan (the “embodied mind”). Read: Key Concepts, “Bodily continuity” (p. 17). Watch: Personal Identity, Part II: The Body Theory and the Personality Theory (Shelly Kagan) — Yale Courses · 50:35
- The simple view (soul view) — personal identity is simple and unanalysable, often grounded in a soul. Figures: Butler, Reid, Swinburne, Chisholm. Read: Key Concepts, p. 231; van Inwagen, ch. 11. Watch: Personal Identity, Part I: Identity Across Space and Time and the Soul Theory (Shelly Kagan) — Yale Courses · 49:50; Richard Swinburne: How Does Personal Identity Persist Through Time? — Closer To Truth · 7:10
- Parfit’s reductionism — identity is not what matters in survival; psychological connectedness is. Read: Crane & Farkas, Parfit (p. 560); Key Concepts, “Fission” (p. 75) and “Survival” (p. 241). Watch: Arguments Against Personal Identity: Crash Course Philosophy #20 — Crash Course · 9:44; Derek Parfit on Personal Identity (1996) — Philosophy Overdose · 7:29; Locke and Derek Parfit on Personal Identity and Split Brains — Simon Cushing · 59:49
- No-self and bundle views — there is no enduring self, only a bundle of perceptions. Figures: Hume, Buddhist philosophy. Read: Key Concepts, p. 21. Watch: Hume, Treatise of Human Nature: The Self as Bundle of Perceptions — Sadler · 14:10; What is the Bundle Theory of Self? — Carneades.org · 7:43
- Narrative views — a person is constituted by the story they live and tell. Figures: Marya Schechtman, Alasdair MacIntyre. Watch: Wi-Phi, “The Narrative Self” (above). Watch: Personal Identity (The Narrative Self) — Wi-Phi · 9:12; Remember Who You Are: Personal Identity and Memory (Marya Schechtman) — Royal Institute of Philosophy · 1:27:39
- Constitution view of persons — a person is constituted by an animal without being identical to it. Figure: Lynne Rudder Baker.
- Hylomorphic view — a human is a rational animal whose substantial form is the soul, so resurrection means the same form re-informing matter. Figures: Aquinas. Read: Hasker, “Eternal Life: Immortality or Resurrection?” Watch: Body and Soul (Aquinas 101) — Thomistic Institute · 6:42
Study
Watch
- Personal Identity: Crash Course Philosophy #19 — Crash Course
- Arguments Against Personal Identity: Crash Course Philosophy #20 — Crash Course
- Personhood: Crash Course Philosophy #21 — Crash Course
- Locke on Personal Identity #1, #2, #3 — Wi-Phi · 11:31, 13:07, 10:09
- Personal Identity (The Narrative Self) — Wi-Phi · 9:12
- Personal Identity — Philosophy Tube · 8:15
- Bonus: Peter van Inwagen — Is the Person All Material? — Closer To Truth · 14:41
Encyclopedia: SEP: Personal Identity · IEP: Personal Identity · Wikipedia: Personal identity
Read
- Warm-up: Mumford, ch. 7 “What is a person?” (pp. 65–75)
- Core: Crane & Farkas, Part VIII: Parfit, “Personal Identity” (p. 560); Snowdon, “Persons, Animals, and Ourselves” (p. 578); introduction (p. 527)
- van Inwagen, ch. 11 “The Nature of Rational Beings: Dualism and Personal Identity” (pp. 249–266)
- Hasker, ch. 3, “Eternal Life: Immortality or Resurrection?”
- Leibniz, §34 (the immortality we want requires memory)
- Key Concepts: Psychological continuity (p. 197), Bodily continuity (p. 17), Animalism (p. 7), Memory theory (p. 120), Fission (p. 75), Survival (p. 241), Simple view of personal identity (p. 231), Split brain case (p. 237), Quasi-memory (p. 200)
- Already in your vault: Hicks, Lecture 2, §17 (the Ship of Theseus applied to human beings); Lecture 7: The Human Being
Write: In Parfit’s fission case, which of the two resulting people is you? Defend “neither,” “both,” or “one.”
Unit 14 — Mind and Body
Question: Are you a physical thing? If not, how does your mind move your body?
Main positions
- Substance dualism — the mind is a non-physical substance. Figures: Descartes, Swinburne. Read: van Inwagen, ch. 10; Crane & Farkas, Descartes (p. 611). Watch: Where Does Your Mind Reside?: Crash Course Philosophy #22 — Crash Course · 9:07; Mind-Body Dualism — Wi-Phi · 8:25; Cartesian Dualism — Philosophy Tube · 8:28; Descartes, Meditation 6: Faculties of the Human Mind and Body — Sadler · 13:15; Princess Elisabeth’s Attack on Descartes’ Dualism (1643) — Jeffrey Kaplan · 15:40
- How the two relate: interactionism (Descartes), parallelism and pre-established harmony (Leibniz, §33; Crane & Farkas, p. 619), occasionalism (Malebranche) or epiphenomenalism (mind is caused but causes nothing).
- Emergent dualism — a mind emerges from the brain but is a new substance in its own right. Figure: William Hasker. Read: Hasker, ch. 3, “Emergentism”. Watch: The Argument from Reason and Emergent Dualism (William Hasker) — Parker’s Pensées · 1:02:25
- Property dualism — one physical substance with irreducibly mental properties. Figures: David Chalmers; Frank Jackson’s knowledge argument (“Mary”). Read: Heil, §19.2 “Mary’s Experience” (p. 224); Nagel, “What Is It Like to Be a Bat?” (Crane & Farkas, p. 648). Watch: Neuroscience and Philosophy 2: The Hard Problem of Consciousness — Wi-Phi · 5:44; Mind and Body: Property Dualism (David Chalmers) — Royal Institute of Philosophy · 12:34; Substance vs Property Dualism — Philosophy Vibe · 5:50
- Physicalism (materialism) Watch: The Nature of Persons: Dualism vs. Physicalism (Shelly Kagan) — Yale Courses · 41:38
- Behaviorism — mental states are dispositions to behave. Figure: Gilbert Ryle. Read: Hasker, ch. 3, “Avoiding the Problem: Behaviorism and Idealism”. Watch: The Behaviorist Theory of Mind — Jeffrey Kaplan · 17:15; Gilbert Ryle Attacks Descartes’ Dualism as a “Category Mistake” — Jeffrey Kaplan · 15:57
- Type identity theory — each type of mental state is a type of brain state. Figures: U. T. Place, J. J. C. Smart. Read: SEP: Mind/Brain Identity Theory. Watch: The Mind-Brain Identity Theory — Jeffrey Kaplan · 33:52
- Functionalism — mental states are defined by their causal roles, so they could be realized in silicon. Figures: Putnam, Lewis. Read: Crane & Farkas, Lewis (p. 629); Heil, §11.3. Watch: Functionalism — Jeffrey Kaplan · 29:25; What is Functionalism? — Carneades.org · 5:28
- Token physicalism (anomalous monism) — each mental event is a physical event, but there are no strict psychophysical laws. Figure: Davidson. Read: Crane & Farkas, Davidson (p. 639). Watch: Donald Davidson on the Mental & Anomalous Monism — Philosophy Overdose · 1:12:45
- Eliminative materialism — folk-psychological categories like belief will be eliminated by neuroscience. Figures: Paul and Patricia Churchland. Watch: Neuroscience and Philosophy 7: Eliminative Materialism — Wi-Phi · 5:32 Watch: Neuroscience and Philosophy 7: Eliminative Materialism — Wi-Phi · 5:32; Philosophy of Mind 5.1: Eliminative Materialism — Kane B · 44:09
- Non-reductive physicalism — the mental supervenes on the physical without reducing to it. Read: Key Concepts, “Supervenience” (p. 239). Watch: What is Supervenience? — Attic Philosophy · 8:52; Jaegwon Kim’s “The Myth of Nonreductive Materialism” — TeacherOfPhilosophy · 5:03
- Idealism — only minds and their ideas exist (Berkeley; see Unit 17). Watch: George Berkeley’s Idealism — Philosophy Vibe · 8:59
- Neutral monism — the basic stuff is neither mental nor physical. Figures: William James, Russell.
- Panpsychism — consciousness is a fundamental and pervasive feature of matter. Figures: Philip Goff, Galen Strawson. Watch: Is There Consciousness Beyond the Brain? (Philip Goff) — TEDx Talks · 16:10
- Hylomorphism — the soul is the form of the living body, neither a separate substance nor mere matter. Figures: Aristotle, Aquinas. Watch: Body and Soul (Aquinas 101) — Thomistic Institute · 6:42; Hylomorphism and the New Mechanist Philosophy of Neuroscience (Daniel De Haan) — Thomistic Institute · 1:14:20
- Mysterianism — the mind–body problem is real, but beyond human understanding. Figure: Colin McGinn. Watch: Colin McGinn: Why is Consciousness so Baffling? — Closer To Truth · 11:51
Study
Watch
- Where Does Your Mind Reside?: Crash Course Philosophy #22 — Crash Course
- Mind-Body Dualism — Wi-Phi · 8:25
- Neuroscience and Philosophy 2: The Hard Problem of Consciousness — Wi-Phi · 5:44
- Cartesian Dualism — Philosophy Tube · 8:28
- Rene Descartes Meditation 6 | Faculties of the Human Mind and Body — Sadler · 13:15
- Optional: Artificial Intelligence & Personhood: Crash Course Philosophy #23 — Crash Course
Encyclopedia: SEP: Dualism · SEP: Physicalism · SEP: The Mind/Brain Identity Theory · SEP: Supervenience · IEP: Dualism and Mind · Wikipedia: Mind–body problem · Wikipedia: Mind–body dualism · Wikipedia: Physicalism
Read
- Core: van Inwagen, ch. 10 “The Nature of Rational Beings: Dualism and Physicalism” (pp. 223–248)
- Hasker, ch. 3 “Minds and Bodies”: “The Mystery of Mind and Body”, “Avoiding the Problem: Behaviorism and Idealism”, “Dualism”, “Materialism”, “Emergentism”
- Crane & Farkas, Part IX: Descartes (p. 611), Leibniz (p. 619), Lewis, “Psychophysical and Theoretical Identifications” (p. 629), Davidson (p. 639), Nagel, “What Is It Like to Be a Bat?” (p. 648)
- Heil, ch. 19 “Conscious Experience” (pp. 223–239) and ch. 20 “Zombies” (p. 240)
- Leibniz, §33 (the communication between soul and body)
- Moore, ch. 1 “Descartes” (pp. 25–43)
- Key Concepts: Supervenience (p. 239), Reductionism (p. 215)
- Already in your vault: Mind and the
60.9.3.7 Mindfolder
Write: Give the conceivability argument for dualism and the one premise a physicalist should deny.
Unit 15 — Free Will and Determinism
Question: If every event has a prior cause, can any of your choices be up to you?
Main positions: kinds of determinism
- Causal (nomological) determinism — the past plus the laws of nature fix a unique future (Laplace’s demon). Read: SEP: Causal Determinism; Key Concepts, p. 56. Watch: Determinism vs Free Will: Crash Course Philosophy #24 — Crash Course · 10:26; What is Determinism? (Gentleman Thinker) — Philosophy Tube · 1:08
- Logical determinism (fatalism) — if it’s already true that there will be a sea battle tomorrow, it can’t be avoided. Read: Aristotle’s sea battle (Crane & Farkas, box X.1). Watch: Aristotle, On Interpretation: Necessity, Contingency, and Future Propositions — Sadler · 15:58; What is Logical Fatalism? — PHILO-notes · 2:34
- Theological determinism and divine foreknowledge — if God knows or decrees what you will do, can you do otherwise? Read: Hasker, ch. 2, “Freedom, Necessity and God”; SEP: Foreknowledge and Free Will. Watch: Augustine, City of God bk. 5: Divine Foreknowledge and Human Free Will — Sadler · 18:18; Classical Theism 4 (God’s Omniscience) — Wi-Phi · 4:48; Divine Foreknowledge and Human Freedom — Majesty of Reason · 24:23
- Psychological and neuroscientific determinism — the challenge from Libet’s experiments and social psychology. Read: Key Concepts, “Neuroscience and free will” (p. 143). Watch: The Libet Experiment: Is Free Will Just an Illusion? — BBC Radio 4 · 1:56
Main positions: incompatibilism (free will and determinism can’t both be true)
- Hard determinism — determinism is true, so there is no free will. Figures: d’Holbach; often Spinoza. Read: Key Concepts, p. 90. Watch: Determinism vs Free Will: Crash Course Philosophy #24 — Crash Course · 10:26; What is Hard Determinism? — Carneades.org · 9:44
- Hard incompatibilism (free will skepticism) — free will is incompatible with determinism and with indeterminism, so we lack the kind needed for deserved blame. Figures: Derk Pereboom, Galen Strawson (“the basic argument”). Read: Ney, “Skepticism about Free Will” (p. 256); Key Concepts, “Illusion of free will” (p. 99). Watch: Free Will and Moral Responsibility (Derk Pereboom) — Serious Science · 11:43; Meaning in Life & the Illusion of Free Will (Derk Pereboom) — Philosophy Overdose · 42:46
- Libertarianism — free will exists, so determinism is false. Watch: The Problem of Free Will — Wi-Phi · 7:44; Do We Have Free Will? — Philosophy Tube · 10:48; What is Libertarianism? (Free Will) — Carneades.org · 11:29
- Event-causal — free choices are indeterministically caused by reasons and efforts. Figure: Robert Kane. Watch: Rethinking Free Will: New Perspectives on an Ancient Problem (Robert Kane) — Philosophy Overdose · 49:28
- Agent-causal — the agent herself, not an event, causes the choice. Figures: Thomas Reid, Roderick Chisholm, Timothy O’Connor. Read: Crane & Farkas, Chisholm (p. 720); Key Concepts, “Agent causation” (p. 3). Watch: Timothy O’Connor on Agent Causation, Part 1 — Gordon Pettit · 12:53; Agent Causal Libertarianism with Tim O’Connor (Episode 12) — The Free Will Show · 54:27
- Non-causal — free actions need no cause at all, only reasons. Figures: Carl Ginet, Hugh McCann.
- The main objection is the luck problem: undetermined choices seem random rather than free. Read: Key Concepts, p. 191; Ney, p. 252.
Main positions: compatibilism (free will and determinism can both be true)
- Classical compatibilism — freedom is doing what you want without external constraint; “could have done otherwise” means “would have, had you chosen to”. Figures: Hobbes, Hume, Mill, G. E. Moore, Ayer. Read: Crane & Farkas, Hume (p. 673); Ney, p. 246. Watch: Compatibilism: Crash Course Philosophy #25 — Crash Course · 8:55; Hume, Enquiry: The Doctrine of Necessity — Sadler · 15:07; What is Compatibilism? (Free Will) — Carneades.org · 7:31
- Hierarchical (“mesh”) theories — you act freely when your will matches what you want to want. Figures: Harry Frankfurt; Gary Watson (valuational view). Read: Crane & Farkas, Frankfurt (p. 682). Watch: First vs Second Order Desires (Frankfurt’s Volitions) — Carneades.org · 3:34; Harry Frankfurt: “Freedom of the Will and the Concept of a Person” — Simon Cushing · 56:51
- Reasons-responsiveness — freedom is acting from a mechanism that responds to reasons, which requires “guidance control” but not “regulative control” (the ability to do otherwise). Figures: John Martin Fischer and Mark Ravizza. Read: Key Concepts, p. 88. Watch: Free Will and Moral Responsibility (John Martin Fischer) — Brain in a Vat · 54:29
- Semicompatibilism — moral responsibility is compatible with determinism even if the ability to do otherwise isn’t. Figure: Fischer. Watch: John Martin Fischer and Semi-Compatibilism — infophilosopher · 1:00:47
- Strawsonian compatibilism — responsibility is grounded in our “reactive attitudes” (resentment, gratitude), which no metaphysical theory could overturn. Figure: P. F. Strawson, “Freedom and Resentment” (1962). Read: Key Concepts, p. 209. Watch: P. F. Strawson: “Freedom and Resentment” — Simon Cushing · 49:24
- New dispositionalism — the ability to do otherwise is a disposition you can have even in a deterministic world. Figures: Kadri Vihvelin, Michael Fara.
- Leibniz — reasons “incline without necessitating”. Read: Leibniz, §13, §30.
Key arguments
- The consequence argument (for incompatibilism): if determinism is true, our acts follow from the laws and the remote past, which aren’t up to us. Figure: van Inwagen. Read: Crane & Farkas, van Inwagen (p. 695); Key Concepts, p. 50. Watch: Peter van Inwagen: “An Argument for Incompatibilism” — Simon Cushing · 26:48; Peter van Inwagen: What is Free Will? — Closer To Truth · 10:01
- Frankfurt cases (against the principle of alternate possibilities): you can be responsible even when you couldn’t have done otherwise. Read: Key Concepts, pp. 81, 182. Watch: John Martin Fischer on Frankfurt-Style Compatibilism, Part 2 — Gordon Pettit · 12:17; Am I Responsible Even If I Couldn’t Do Otherwise? (Frankfurt Cases) — Parker’s Pensées · 1:43:57
- Manipulation arguments (against compatibilism): an agent designed to choose as a determined agent does seems unfree. Figure: Pereboom’s four-case argument. Watch: The Manipulation Argument with Derk Pereboom (Episode 8) — The Free Will Show · 51:17
Study
Watch
- Determinism vs Free Will: Crash Course Philosophy #24 — Crash Course
- Compatibilism: Crash Course Philosophy #25 — Crash Course
- The Problem of Free Will — Wi-Phi · 7:44
- Do We Have Free Will? — Philosophy Tube · 10:48
- David Hume, Enquiry | The Doctrine of Necessity — Sadler · 15:07
Encyclopedia: SEP: Free Will · SEP: Compatibilism · SEP: Arguments for Incompatibilism · SEP: Causal Determinism · IEP: Free Will · Wikipedia: Free will · Wikipedia: Compatibilism · Wikipedia: Incompatibilism
Read
- Core: Ney, ch. 9 “Free Will” (pp. 239–258): “The Problem of Free Will and Determinism” (p. 241), “Compatibilism” (p. 246), “Libertarianism” (p. 252), “Skepticism about Free Will” (p. 256)
- van Inwagen, ch. 12 “The Powers of Rational Beings: Freedom of the Will” (pp. 267–286). He is the author of the consequence argument, so this is the source.
- Hasker, ch. 2 “Freedom and Necessity”: “Compatibilism: A Way Out?”, “Determinism: Arguments and Objections”, “Free Will: Arguments and Objections”, “Freedom, Necessity and God”
- Crane & Farkas, Part X: Hume (p. 673), Frankfurt, “Freedom of the Will and the Concept of a Person” (p. 682), van Inwagen, “The Incompatibility of Free Will and Determinism” (p. 695), Loewer (p. 707), Chisholm, “Human Freedom and the Self” (p. 720)
- Leibniz, §13 and §30 (reasons “incline without necessitating”)
- Key Concepts: Compatibilism (p. 40), Consequence argument (p. 50), Frankfurt-style cases (p. 81), Principle of alternate possibilities (p. 182), Libertarianism (p. 116), Agent causation (p. 3), Hard determinism (p. 90), Problem of luck (p. 191), Reactive attitudes (p. 209), Source incompatibilism (p. 235)
- Already in your vault: Free Will
Write: Put the consequence argument in premise form and say whether a Frankfurt case defeats it.
Unit 16 — Why Is There Something Rather Than Nothing?
Question: Must something exist necessarily, or could there have been nothing at all?
Main positions
- Theism: a necessary being explains why there is anything Watch: What do “Necessary” and “Contingent” Mean? (Gentleman Thinker) — Philosophy Tube · 1:04
- Ontological arguments — God’s existence follows from the concept of a greatest possible being. Figures: Anselm, Descartes; Plantinga’s modal version. Read: van Inwagen, ch. 6 (p. 129). Watch: Anselm & the Argument for God: Crash Course Philosophy #9 — Crash Course · 9:13; Anselm’s Proslogion: Ontological Argument for God’s Existence — Sadler · 15:14; Descartes’ Trademark Proof of God — Philosophy Tube · 9:12
- Cosmological arguments. Read: van Inwagen, ch. 7 (p. 159). Watch: Aquinas & the Cosmological Arguments: Crash Course Philosophy #10 — Crash Course · 10:26; Cosmological Argument #1 — Wi-Phi · 7:45; Cosmological Argument #2 — Wi-Phi · 6:55
- Kalam — the universe began, so it has a cause. Figures: al-Ghazali, William Lane Craig. Watch: The Kalam Cosmological Argument, Part 1: Scientific — drcraigvideos · 4:13; The Kalam Cosmological Argument (Arguments for God #4) — Alex O’Connor · 7:36
- Thomistic — a per se causal series here and now needs a first member that is pure act. Figure: Aquinas. Read: Feser, §2.4.2 (p. 164). Watch: Aquinas, Summa Theologiae: Five Ways for Proving God’s Existence — Sadler · 18:22; Aquinas, Summa Theologiae: The 1st Way to Prove God’s Existence — Sadler · 12:19; St. Thomas Aquinas’ Favorite Argument for the Existence of God (Aquinas 101) — Thomistic Institute · 9:14
- Leibnizian contingency argument — contingent things need a sufficient reason, found only in a necessary being. Figure: Leibniz. Read: Moore, ch. 3 (p. 67). Watch: Leibniz’ Contingency Argument — drcraigvideos · 5:15; The Leibnizian Cosmological Argument — Majesty of Reason · 1:54:45
- Design and fine-tuning — explains why there are rational beings. Read: van Inwagen, ch. 9 (p. 201). Watch: Intelligent Design: Crash Course Philosophy #11 — Crash Course · 9:34; Was the Universe Designed? — Philosophy Tube · 9:25; The Fine-Tuning of the Universe — drcraigvideos · 6:23; The Fine-Tuning Argument is Terrible (Sean Carroll) — Alex O’Connor · 12:42
- The world is a brute fact — there is no explanation for its existence. Bertrand Russell in his 1948 BBC debate with Copleston: “I should say that the universe is just there, and that’s all.” Watch: Russell–Copleston Debate on God’s Existence (1948) — Philosophy Overdose · 17:20; The Full Russell–Copleston Debate on God (1948) — Philosophy Overdose · 56:16
- The world exists necessarily — nothing else could have been. Figure: Spinoza. Read: van Inwagen, ch. 2 (monism). Watch: Spinoza: A Complete Guide to Life — Then & Now · 52:46
- Axiarchism — the world exists because it is good that it should. Figures: John Leslie, Nicholas Rescher. Read: Crane & Farkas, Parfit, “Why Anything? Why This?” (p. 12), which surveys this answer and others. Watch: John Leslie: Why Is There Something Rather Than Nothing? — Closer To Truth · 10:42
- Plenitude — every possible world exists, so there’s nothing special to explain about ours. Figures: Lewis, Nozick (“fecundity”).
- Physical “something from nothing” answers — the quantum vacuum (Lawrence Krauss). Critics reply that a quantum vacuum is not nothing. Watch: A Universe From Nothing (Lawrence Krauss, AAI 2009) — Richard Dawkins Foundation · 1:04:52
- Pantheism and panentheism — God is identical with the world, or the world is in God. Read: Hasker, ch. 5. Watch: Pantheism: Explained and Debated — Philosophy Vibe · 12:50; John Leslie: Panentheism, Is the World in God? — Closer To Truth · 11:00
- Rejecting the question — “Why is there something rather than nothing?” rests on a mistake, since nothingness isn’t a “natural” default state that needs overcoming. Figure: Adolf Grünbaum. Read: SEP: Nothingness. Watch: Bede Rundle: Why is There Something Rather Than Nothing? — Closer To Truth · 13:05
- Heidegger — the question is the fundamental question of metaphysics, and it concerns Being itself, not a supreme being. Read: Heidegger, ch. 1 (p. 1). Watch: Heidegger, What Is Metaphysics: Metaphysical Interpretations of the Nothing — Sadler · 14:09; Heidegger, What Is Metaphysics?: The Nothing, Not, and Negation — Sadler · 11:17
- On the principle of sufficient reason: strong versions are defended by Leibniz, Alexander Pruss and Michael Della Rocca; van Inwagen argues it leads to “modal collapse” (nothing is contingent); Hume rejects it. Read: van Inwagen, ch. 7; SEP: Principle of Sufficient Reason. Watch: The Principle of Sufficient Reason — Kane B · 51:05; Principle of Sufficient Reason: Does It Prove the Existence of God? (Debate) — Philosophy Vibe · 10:03
Study
Watch
- Anselm & the Argument for God: Crash Course Philosophy #9 — Crash Course
- Aquinas & the Cosmological Arguments: Crash Course Philosophy #10 — Crash Course
- Intelligent Design: Crash Course Philosophy #11 — Crash Course
- Cosmological Argument #1 and #2 — Wi-Phi · 7:45, 6:55
- Anselm’s Proslogion | Ontological Argument for God’s Existence — Sadler · 15:14
- Thomas Aquinas, Summa Theologiae | The 1st Way to Prove God’s Existence — Sadler · 12:19
- Descartes’ Trademark Proof of God — Philosophy Tube · 9:12
- Bonus: Peter van Inwagen — The Mystery of Existence — Closer To Truth · 16:45
Encyclopedia: SEP: Nothingness · SEP: Cosmological Argument · SEP: Ontological Arguments · SEP: Principle of Sufficient Reason · IEP: Anselm’s Ontological Argument · Wikipedia: Why is there anything at all? · Wikipedia: Principle of sufficient reason
Read
- Warm-up: Mumford, ch. 9 “Is nothing something?” (pp. 87–97)
- Core: van Inwagen, Part Two “Why the World Is”: ch. 6 “Necessary Being: The Ontological Argument” (pp. 129–158) and ch. 7 “Necessary Being: The Cosmological Argument” (pp. 159–182)
- van Inwagen, ch. 9 “The Place of Rational Beings in the World: Design and Purpose” (pp. 201–222)
- Crane & Farkas, Part I “God”: Parfit, “Why Anything? Why This?” (p. 12); Aquinas, “The Five Ways” (p. 31); Anselm (p. 41); Leibniz, Monadology selection (p. 43)
- Feser, §2.4 “Causal series”, including §2.4.2 “Per se versus per accidens” (pp. 161–170); §4.2 “The real distinction” (p. 267)
- Hasker, ch. 4, “The Origin of the World”; ch. 5 “God and the World” (naturalism, pantheism, panentheism, theism)
- The continental version: Heidegger, ch. 1 “The Fundamental Question of Metaphysics” (pp. 1–56). Read the translators’ outline (p. xxx) first.
- Moore, ch. 3 “Leibniz” (pp. 67–86)
- Already in your vault: Hicks, Lecture 1: Origins of Reality and Lecture 3: Nature & Super-Nature
Write: State the principle of sufficient reason, then van Inwagen’s argument that it proves too much (that it leaves no contingent truths).
Unit 17 — Realism, Anti-Realism and Idealism
Question: Does the world exist and have its features independently of minds and language?
Main positions
- Metaphysical (external) realism — the world’s existence and structure are independent of minds; there is one true, complete description of it. Read: Loux & Crisp, “Two Views about the Nature of Reality” (p. 304); Key Concepts, “Metaphysical realism” (p. 126). Watch: Realism and Anti-Realism — Attic Philosophy · 6:23; Does the Physical World Exist? — Philosophy Tube · 7:47
- Idealism Watch: What is Idealism? — PHILO-notes · 3:36
- Subjective idealism — to be is to be perceived (or to perceive). Figure: Berkeley. Read: van Inwagen, ch. 3; Crane & Farkas, Berkeley (p. 77). Watch: Locke, Berkeley, & Empiricism: Crash Course Philosophy #6 — Crash Course · 9:52; Berkeley’s Idealism — Philosophy Tube · 8:33; Bishop Berkeley’s Idealism — Daniel Bonevac · 35:13
- Transcendental idealism — we know appearances structured by our forms of intuition and categories, not things in themselves. Figure: Kant. Read: Moore, ch. 5 (p. 107); Crane & Farkas, Kant (p. 101). Watch: Kant, Prolegomena: Clarifications About Idealism — Sadler · 13:32; Kant’s Transcendental Idealism — Philosophy Vibe · 13:03; Kant’s Transcendental Idealism — Daniel Bonevac · 35:16
- Absolute idealism — reality is the self-developing whole of Spirit or Reason. Figures: Hegel, Bradley. Read: Moore, ch. 7 (p. 162). Watch: Hegel: Absolute Idealism and the Dialectic — Philosophy Vibe · 14:04; Hegel’s Absolute Idealism — Philosophy Overdose · 8:49
- Phenomenalism — physical objects are logical constructions from actual and possible sensations. Figures: J. S. Mill, A. J. Ayer. Read: Key Concepts, p. 162; Crane & Farkas, Robinson (p. 107). Watch: A. J. Ayer: Phenomenalism — BlueSpectacles · 15:41
- Semantic anti-realism — the meaning of a sentence is given by what would verify it, so we can’t assume bivalence for claims beyond possible verification. Figure: Michael Dummett. Read: Loux & Crisp, p. 310; Crane & Farkas, Dummett (p. 120); Moore, ch. 14, §2 (p. 350). Watch: Simon Blackburn: Realism vs. Anti-realism — Closer To Truth · 10:37; Michael Dummett on Frege, Truth, Meaning & Realism (1997) — Philosophy Overdose · 52:11
- Internal realism — facts and objects exist only relative to a conceptual scheme; the “God’s eye view” is incoherent. Figure: Hilary Putnam (the model-theoretic argument). Read: Loux & Crisp, p. 323; Key Concepts, “God’s eye view” (p. 85). Watch: Anti-Realism: Searle & Putnam — Philosophy Overdose · 7:29; Putnam’s Argument Against Skepticism — Kane B · 41:26
- Ontological relativity — reference is inscrutable; what we talk about is fixed only relative to a translation manual. Figure: Quine. Read: Loux & Crisp, p. 317. Watch: Gavagai, Quine, and the Indeterminacy of Translation — Daniel Bonevac · 20:12
- Pragmatism — truth is what works in inquiry. Figures: Peirce, William James, Richard Rorty. Read: Key Concepts, p. 172. Watch: William James, Pragmatism Lecture 2: The Pragmatic Theory of Truth — Sadler · 19:23; James’ Pragmatism (Darren Staloff) — Michael Sugrue · 45:25
- Relativism and social constructivism. Read: Key Concepts, “Relativism” (p. 220) and “Postmodernism” (p. 172). Watch: Social Constructs (or, “What is a Woman, Really?”) — Philosophy Tube · 24:17; What is Social Constructionism? — PHILO-notes · 3:31
- Debates about science Watch: Is Science Objective? The Philosophy of Science — Unsolicited advice · 47:19
- Scientific realism — our best theories are approximately true, including about unobservables. Watch: What is Scientific Realism? — Carneades.org · 5:54; Scientific Realism 2: The No-Miracles Argument — Kane B · 43:14
- Constructive empiricism — theories need only be empirically adequate. Figure: Bas van Fraassen. Watch: Bas van Fraassen on Empiricism (1990) — Philosophy Overdose · 1:09:35
- Structural realism — science gets the structure right, not the nature of things. Figure: John Worrall. Watch: Scientific Realism 8: Structural Realism — Kane B · 50:08
- Read: Hasker, ch. 4, “The Scientific Critique of Realism”; SEP: Scientific Realism.
- Local anti-realisms — fictionalism and response-dependence about particular domains (colors, values, numbers). Read: Key Concepts, “Response-dependence” (p. 226).
Study
Watch
- Locke, Berkeley, & Empiricism: Crash Course Philosophy #6 — Crash Course
- Berkeley’s Idealism — Philosophy Tube · 8:33
- Does the physical world exist? — Philosophy Tube · 7:47
- Beginner’s Guide to Kant’s Metaphysics & Epistemology — Philosophy Tube · 5:56
- Kant, Prolegomena | Clarifications About Idealism — Sadler · 13:32
- The Nature of Truth — Wi-Phi · 5:50
Encyclopedia: SEP: Realism · SEP: Idealism · SEP: George Berkeley · SEP: Kant’s Transcendental Idealism · SEP: Scientific Realism · IEP: George Berkeley · Wikipedia: Philosophical realism · Wikipedia: Anti-realism · Wikipedia: Idealism
Read
- Core: Loux & Crisp, ch. 11 “The Challenge of Anti-Realism” (pp. 304–338): “Two Views about the Nature of Reality” (p. 304), “Dummett’s Anti-Realist” (p. 310), “The Inscrutability of Reference” (p. 317), “Putnam’s Anti-Realism” (p. 323), “Realism or Anti-Realism?” (p. 328)
- van Inwagen, ch. 3 “Externality” (pp. 53–70, on Berkeley) and ch. 5 “Objectivity” (pp. 107–122)
- van Inwagen, ch. 2 “Individuality” (pp. 27–52), on monism: is there only one thing?
- Hasker, ch. 4 “The World”: “The Idealist Rejection of Realism”, “The Scientific Critique of Realism”, “Consequences of Scientific Realism”
- Crane & Farkas, Part II “Realism and Idealism”: Locke (p. 69), Berkeley, Three Dialogues (p. 77), Kant (p. 101), Robinson (p. 107), Dummett, “Realism” (p. 120)
- Moore, ch. 5 “Kant” (pp. 107–142); ch. 14 “Dummett”, §2 “Realism and Anti-Realism” (p. 350)
- Heil, §6.4 “Anti-Realism and Ontology” (p. 58)
- Key Concepts: Realism and anti-realism (global) (p. 212), Anti-realism (p. 10), Idealism (p. 95), Phenomenalism and idealism (p. 162), Primary and secondary qualities (p. 179), Response-dependence (p. 226), Brains in a vat (p. 20)
- Already in your vault: Subjectivism vs Objectivism
Write: Give Berkeley’s master argument in two sentences, then the reply you find strongest.
Unit 18 — Grounding, Fundamentality and What Metaphysics Is For
Question: Is reality layered, with some facts holding in virtue of others? And are metaphysical debates about the world, or about our concepts?
Main positions: grounding and fundamentality
- Grounding realism — there is a primitive, non-causal “in virtue of” relation that structures reality in levels. Figures: Kit Fine, Jonathan Schaffer, Gideon Rosen. Read: Thomasson, §5.1; SEP: Metaphysical Grounding. Watch: The Hidden Layers of Reality: Jonathan Schaffer on Metaphysical Grounding — Know Time · 5:56; Grounding and Ground Functionalism (Jonathan Schaffer) — Parker’s Pensées · 1:09:37
- Grounding skepticism — grounding is either several different relations or does no explanatory work. Figures: Jessica Wilson (“No Work for a Theory of Grounding”), Chris Daly, Thomas Hofweber. Read: Thomasson, §§5.2–5.3. Watch: Jessica Wilson: The Unity and Priority Arguments for Grounding — Philosophy at the University of Edinburgh · 49:28
- Priority monism vs pluralism — the whole cosmos is the one fundamental thing, versus the smallest parts being fundamental. Figure: Schaffer (for priority monism). Read: SEP: Monism. Watch: Monism vs Pluralism: Is Reality One Thing or Many? (Jonathan Schaffer) — Know Time · 9:30; What is Monism? (Existence vs Priority Monism) — Carneades.org · 5:15
- Foundationalism vs metaphysical infinitism — whether there must be a fundamental level at all, or dependence could go down forever. Figure: Matteo Morganti (infinitism). Read: SEP: Fundamentality. Watch: Jonathan Schaffer: Beyond Fundamentality — Royal Institute of Philosophy · 44:06
- Truthmaker theory — every truth (maximalism) or every positive truth is made true by something that exists. Figure: Armstrong; truthmaker skeptics disagree. Read: Heil, ch. 7 (p. 61); Thomasson, ch. 4; Key Concepts, p. 262. Watch: Truthmakers and Truthbearers — Carneades.org · 40:02
- Structure realism — some concepts “carve nature at its joints” better than others, and metaphysics seeks the joint-carving ones. Figure: Ted Sider. Read: Thomasson, ch. 3; Key Concepts, p. 27. Watch: Ted Sider: Is Metaphysics About the Real World? (Part 1) — Plato For The Masses · 14:41; Ted Sider: Is Metaphysics About the Real World? (Part 2) — Plato For The Masses · 14:56
- Humean supervenience — everything supervenes on the local distribution of qualities across spacetime. Figure: Lewis. Read: Key Concepts, p. 93. Watch: The Humean Mosaic — Kane B · 40:37
Main positions: what metaphysics is for (metametaphysics)
- Heavyweight (neo-Quinean) realism — ontological questions are deep and factual, and are answered by theory choice. Figures: Quine, van Inwagen, Sider. Watch: Quine’s Ontology — Daniel Bonevac · 47:49
- Neo-Carnapian deflationism — existence questions are trivial within a framework and practical outside one. Figures: Carnap (internal and external questions), Eli Hirsch (quantifier variance), Amie Thomasson (easy ontology). Read: Ney, p. 120; Thomasson, chs. 6–8. Watch: Metaphysics: Carnap on Ontology — Kane B · 55:01; Carnap on Empiricism, Semantics, and Ontology — Daniel Bonevac · 48:41; Amie Thomasson: Easy Ontology and the Work of Metaphysics — Royal Institute of Philosophy · 59:16
- Epistemic skepticism — the questions are real but we can’t answer them. Figures: Karen Bennett (“epistemicism”), Uriah Kriegel.
- Naturalized metaphysics — only metaphysics that serves science is legitimate. Figures: James Ladyman and Don Ross, Every Thing Must Go. Read: Ney, p. 134. Watch: Naturalized Metaphysics 1 — Kane B · 33:02; Naturalized Metaphysics 2 — Kane B · 41:41
- Conceptual engineering — metaphysics should improve our concepts rather than discover hidden facts. Figure: Thomasson. Read: Thomasson, ch. 6 and ch. 9. Watch: Conceptual Engineering — Kane B · 1:00:56
Study
Watch
- Bonus: The Hidden Layers of Reality: Jonathan Schaffer on Metaphysical Grounding — Know Time · 5:56
- Bonus: Does Metaphysics Reveal Reality? (Episode 908) — Closer To Truth · 26:47
- Emergence — Wi-Phi · 5:40 (rewatch; it’s about levels)
Encyclopedia: SEP: Metaphysical Grounding · SEP: Fundamentality · SEP: Truthmakers · SEP: Rudolf Carnap · Wikipedia: Metaphysical grounding · Wikipedia: Meta-ontology · Wikipedia: Truthmaker theory
Read
- Core: Ney, ch. 4 “Critiques of Metaphysics” (pp. 119–137): “Carnap’s Two Critiques of Metaphysics” (p. 120), “Responses to Carnap’s Arguments” (p. 127), “The Relationship between Metaphysics and Science: A Proposal” (p. 134); plus ch. 1, “Fundamental Metaphysics and Ontological Dependence” (p. 53)
- Core: Thomasson, ch. 5 “Fundamentality and Grounding Projects” (§5.1 “Grounding: The Basic Idea” through §5.5), then ch. 1 “The Traditional Conception of Metaphysics” and ch. 6 “Metaphysics as Conceptual Engineering”
- Thomasson, ch. 4 “The Truthmaker Conception of Metaphysics” and ch. 10 “The Perennial Philosophical Project”
- Heil, ch. 2 “Levels of Reality” (pp. 17–21), ch. 5 “Abandoning the Levels Conception” (pp. 40–50), ch. 7 “Truth Making” (pp. 61–74)
- Moore, ch. 11 “Carnap” (pp. 279–301) and Conclusion (p. 581)
- Key Concepts: Metametaphysics (p. 122), Truthmakers (p. 262), Supervenience (p. 239), Carving nature at its joints (p. 27), Linguistic framework (p. 118)
- Already in your vault: Grounding
Write: After 18 units, is metaphysics about the world or about our concepts? Answer with Thomasson on one side and Loux & Crisp on the other, and say which one you side with.
Optional tracks
History of modern metaphysics. Read Moore alongside the units: ch. 2 Spinoza (p. 44) with Unit 5; ch. 4 Hume (p. 87) with Unit 9; ch. 12 Quine (p. 302) with Unit 2; ch. 18 Heidegger (p. 459) after Unit 16. Leibniz’s Discourse (30 pages) can be read whole in one sitting after Unit 9.
Heidegger on Being. After Unit 16, continue with Heidegger ch. 2 “On the Grammar and Etymology of the Word ‘Being’” (p. 57), ch. 3 “The Question of the Essence of Being” (p. 82) and ch. 4 “The Restriction of Being” (p. 102). Pair them with Sadler’s Being and Time | The Question of the Meaning of Being (13:29) and What Is Metaphysics | Nature of Metaphysical Inquiry (14:55), and Moore ch. 18.
Social ontology. What are races, genders and money? Ney ch. 10 “The Metaphysics of Race” (pp. 259–279); Wi-Phi’s Racial Ontology #1 (Introduction); SEP: Social Ontology.
Better books to consider
Loux & Crisp is the best spine you could have. You already own the right core. These would add something your shelf lacks:
- Earl Conee and Theodore Sider, Riddles of Existence: A Guided Tour of Metaphysics (2nd ed., OUP 2014). The best first book on the subject: one lively chapter per puzzle. Better than Hasker as a first pass, and it pairs well with Mumford.
- Robert C. Koons and Timothy H. Pickavance, Metaphysics: The Fundamentals (Wiley-Blackwell 2015). A rigorous survey that takes the Aristotelian options seriously, bridging Loux & Crisp and Feser. Their The Atlas of Reality (2017) is the expanded version.
- E. J. Lowe, A Survey of Metaphysics (OUP 2002). A harder and deeper spine than Ney, neo-Aristotelian, and strong on substance, causation and time.
- Theodore Sider, John Hawthorne and Dean Zimmerman (eds.), Contemporary Debates in Metaphysics (Blackwell 2008). Paired essays, one on each side of each question. Best for your argumentation work: every chapter is a live debate.
- Jaegwon Kim, Daniel Z. Korman and Ernest Sosa (eds.), Metaphysics: An Anthology (2nd ed., Wiley-Blackwell 2012). Broader than Crane & Farkas and has a searchable text layer.
- D. M. Armstrong, Universals: An Opinionated Introduction (Westview 1989). The classic short book for Unit 3.
- Ney, 2nd edition (Routledge). An updated edition of the book you have exists. Your first edition is fine for this plan.
Progress
- Unit 1 — What is metaphysics?
- Unit 2 — Being and existence
- Unit 3 — Universals and particulars
- Unit 4 — Abstract objects
- Unit 5 — Substance
- Unit 6 — Change, act and potency, form and matter
- Unit 7 — Possibility and necessity
- Unit 8 — Essence
- Unit 9 — Causation, laws and powers
- Unit 10 — Time
- Unit 11 — Persistence
- Unit 12 — Parts and wholes
- Unit 13 — Personal identity
- Unit 14 — Mind and body
- Unit 15 — Free will
- Unit 16 — Why anything at all?
- Unit 17 — Realism, anti-realism, idealism
- Unit 18 — Grounding and the method of metaphysics