Pinker’s supplement — chimpanzees, bonobos, and what primates do not settle
Pinker’s 2011 review reports almost 50 inferred or observed intercommunity killings and more than 25 intracommunity killings across at least nine chimpanzee communities; in some communities, more than a third of males reportedly died violently. He emphasizes that attackers usually exploit a large numerical advantage, which fits his broader claim that violence is strategically deployed when expected gains are high and risks are low—not discharged by a constant “killer instinct.”
Bonobos complicate the inference. Pinker reports no lethal coalitionary raids among them and acknowledges that humans are as closely related to bonobos as to common chimpanzees, while arguing that bonobos are not wholly nonaggressive and may be an evolutionarily specialized case. The comparison therefore establishes a primate capacity and an ecological possibility, not that human warfare is genetically inevitable, morally excusable, or a transparent inheritance from one ancestral species.
Evidence boundary: this records Pinker’s synthesis of the primatological literature available in 2011; the ancestral reconstruction is an inference and the evidence base has continued to develop.Chapter 2 synthesis · Attachment (file not included in this release) · Attachment (file not included in this release)
Pinker’s Chapter 3 supplement — self-control has “no zero point”
Pinker stresses that Elias did not claim early-modern Europe invented self-control or that medieval people had none. Every society regulates sex, aggression, excretion, appetite, and public conduct; what changes is which impulses are restrained, how early the rules are socialized, and how strongly local incentives reward restraint. Elias’s phrase was “There is no zero point.”
Pinker outlines three possible mechanisms rather than choosing one. Restraint may generalize like a practiced muscle; it may operate as a domain-specific social norm; or people may calibrate it to danger. In an environment where a restrained person is easily exploited, a reputation for impulsive retaliation can deter predation. The same human capacity can therefore be strengthened, narrowed, or strategically suppressed by institutions and expectations.
Interpretive boundary: these are candidate psychological mechanisms in Pinker’s 2011 synthesis, not an experimental demonstration that table manners cause lower homicide or that one society possesses more “civilized” people by nature.Chapter 3 synthesis · Attachment (file not included in this release) · Attachment (file not included in this release)
Pinker’s Chapter 9 supplement — heritable does not mean historically selected
Pinker allows that aggression, self-control, and relevant neural traits can be partly heritable while rejecting the leap from individual variation now to genetic change across a population’s recent history. Heritability within an environment does not identify the cause of a historical trend, and cultural evolution can transform norms and institutions without changing the genome. Declines that occur within decades or one generation are especially difficult to explain through selection.
His “Warrior Gene” discussion is a warning about seductive gene stories. A reported MAO-A variant frequency among Maori was amplified into an explanation of conquest and modern social problems, but Pinker summarizes alternatives and complications including a population bottleneck, high frequency in other populations, and regulatory feedback among genes. His conclusion is deliberately limited: recent biological evolution might have affected violent dispositions in principle, but Chapter 9 finds no good evidence that it caused the historical declines under review. The behavioral-genetic estimates are a 2011 synthesis and should not be used as current clinical or population inference. Chapter 9 synthesis · Attachment (file not included in this release) · Attachment (file not included in this release)
Henrich, Chapter 14 — culture can outrun selection without making genes irrelevant
Henrich’s conclusion treats human nature as a developmental and cultural potential, not one invariant psychological profile. Institutions, technologies, languages, rituals, kinship, and markets repeatedly train attention, motives, self-concepts, and social strategies. His urban-graveyard case sharpens the timescale argument: premodern city residents could have life expectancy up to roughly 50 percent lower than rural residents, and cities required heavy in-migration—Henrich cites estimates near 30 percent born elsewhere. Urban psychology and institutions could therefore spread culturally even where urban biological reproduction was weak. Monasteries make the same point more starkly: celibate institutions can transmit durable practices without transmitting genes. Attachment (file not included in this release) · Attachment (file not included in this release)
This is evidence against a simple recent genetic-selection story, not evidence that genes never influence behavior. The educational-attainment example relies on source-era polygenic associations in European-descent samples; such scores are population- and environment-dependent and do not define fixed group capacities. The graveyard inference also does not directly measure psychological alleles. The defensible conclusion is asymmetric: cultural change is demonstrably fast enough to produce large historical psychological shifts, while a genetic contribution must be separately evidenced rather than inferred from present group averages. Attachment (file not included in this release) · Chapter 14 source audit
Naturally Good
1. Jean-Jacques Rousseau (1712–1778)
• Belief: Humans are born good, but society corrupts them.
• Famous Quote: “Man is born free, and everywhere he is in chains.”
• Explanation: Rousseau believed that in the “state of nature,” humans were noble savages who lived harmoniously with nature and others. Civilization introduces inequality and selfishness.
2. Mengzi (Mencius) (372–289 BCE)
• Belief: Humans have an innate tendency toward goodness.
• Famous Quote: “The heart of compassion is possessed by all people alike.”
• Explanation: Mencius, a Confucian philosopher, argued that humans are born with the seeds of virtue, such as compassion, which can grow with proper cultivation.
3. John Locke (1632–1704)
• Belief: Humans are born as “tabula rasa” (blank slates) and are shaped by their experiences.
• Famous Quote: “The mind is furnished with ideas by experience alone.”
• Explanation: While Locke didn’t claim humans are inherently good, he emphasized that people aren’t born evil and can learn virtue through proper education and experience.
Naturally Bad or Flawed
1. Thomas Hobbes (1588–1679)
• Belief: Humans are naturally selfish and violent.
• Famous Quote: Life in the state of nature is “solitary, poor, nasty, brutish, and short.”
• Explanation: Hobbes believed that without a strong government or social contract, humans would be in a constant state of conflict over resources.
2. Xunzi (310–235 BCE)
• Belief: Humans are inherently bad and must be taught goodness.
• Famous Quote: “The nature of man is evil; his goodness is only acquired training.”
• Explanation: Xunzi, a Confucian thinker, argued that humans are born with selfish desires and require moral education and discipline to become virtuous.
3. Niccolò Machiavelli (1469–1527)
• Belief: Humans are self-serving and deceitful by nature.
• Famous Quote: “It is better to be feared than loved if you cannot be both.”
• Explanation: Machiavelli emphasized the pragmatic view that rulers should assume humans act in their own interests, often at the expense of others.
Mixed View
1. Immanuel Kant (1724–1804)
• Belief: Humans are born with the potential for both good and evil.
• Famous Quote: “Out of the crooked timber of humanity, no straight thing was ever made.”
• Explanation: Kant argued that humans have the capacity for moral reasoning but must choose to act according to duty and the moral law.
2. Sigmund Freud (1856–1939)
• Belief: Humans are driven by both constructive (Eros) and destructive (Thanatos) instincts.
• Explanation: Freud saw human behavior as a balance between innate drives and societal constraints, with civilization often repressing destructive tendencies.
3. Aristotle (384–322 BCE)
• Belief: Humans are not naturally good or bad but have the potential for virtue.
• Famous Quote: “We are what we repeatedly do. Excellence, then, is not an act but a habit.”
• Explanation: Aristotle emphasized that moral character is cultivated through habits and education rather than being inherent.
Captured Hobbes and Locke comparison
Capture provenance — Human Nature
Original location: 90 Notes/Human Nature.md. Filed on 2026-10-06. The material below is preserved from the capture; relocation does not independently verify its claims or attributions.
Original properties:
Genre: - Philosophy
Hobbes: Selfish, cruel, driven by desire for power and avoiding pain
Locke: Guided by reason and tolerance
Based on the provided search results, Thomas Hobbes and John Locke had contrasting views on human nature:
Thomas Hobbes believed that human nature is inherently selfish, cruel and driven by a desire for power. In his famous work Leviathan, Hobbes argued that before civilization, this selfishness led to a “state of nature” characterized by anarchy and an “all-out war” where each person sought power for themselves. The only way to subdue humanity’s evil impulses, according to Hobbes, is through a powerful sovereign or “Leviathan” that keeps order. Hobbes saw humans as “machines” that relentlessly pursue their own self-interest by avoiding pain and pursuing pleasure.[1][8][13]
In contrast, John Locke had a more optimistic view of human nature as guided by reason and tolerance. For Locke, the state of nature is characterized by the absence of government but not the absence of mutual obligation. He believed individuals have natural rights to life, liberty and property that precede civil society. While the state of nature could be relatively peaceful, individuals agree to form a commonwealth to institute an impartial power to arbitrate disputes. But if the government abuses people’s rights, the people can rebel and create a new government.[4][7][12][15]
In summary, Hobbes believed the essential nature of man is selfish and prone to conflict, requiring an absolute sovereign to maintain order. Locke saw man as more rational and capable of peaceful cooperation, with government created by the consent of the governed to protect their pre-existing natural rights. Locke’s more positive view of human nature was influential on modern liberal democracy, while Hobbes’ pessimistic view stressed the need for strong central authority to constrain humanity’s worst impulses.