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Self & Not-self

Think of Fichte as asking a very basic question:

“How do we get from me thinking to there being a world at all?”
His answer is built around two key terms:

Self (the I)
Not-self (the not-I)
Here’s the idea in clear steps.

1. Start with the “I”: the self as activity

For Fichte, the most basic thing we can be sure of is not “there is a table” or “there is a world,” but:

“I am.”
But this isn’t just “there’s a little thing called me sitting here.”
He means:

The self is an activity – a doing, a thinking, a willing.
The self “posits itself” – it is aware of itself, it says (in effect) “I exist.”
So his First Principle is:

The I posits itself.
(The self is an active, self-aware subject.)
This is more radical than Descartes’ “I think, therefore I am.”
For Fichte, the I is not one object among others; it is the condition for any experience of objects at all.

2. The not-self: the world as what resists the self

If all there were was this self-positing “I”, nothing would ever oppose it. No friction, no resistance, no limits.
But our actual experience is full of resistance:

You want to move your arm, and something blocks you.
You want the exam to be easy, but the questions are hard.
You imagine whatever you like, but when you open your eyes, the room is already there in a certain way.
So Fichte says:

Alongside the I, we must also have a not-I.
This not-I is:
Everything that is not the self: nature, objects, other bodies, the “external” world.
It shows up, from the self’s point of view, as that which limits the self’s activity.
So the Second Principle:

The I posits a not-I.
(The self becomes aware of a world that is not itself.)
Important: he’s not saying the self “makes up” chairs and trees like a storyteller making up characters.
He’s saying: our experience of a world is always in relation to the self’s activity. The “not-self” is what we encounter as obstacle, resistance, and limit.

3. The interaction: self and not-self limit each other

Now we’ve got:

I (self, activity)
not-I (world, resistance)
But they’re not just two separate blobs sitting there.
Our real experience is:
I try to act → the world pushes back.
The world pushes back → I adjust, resist, strive, learn.
So Fichte’s Third Principle is:

The I and not-I mutually limit each other.
Meaning:
The self isn’t infinite in what it can do: it’s limited by the not-self (gravity, other people, your own body’s limits, etc.).
The not-self isn’t just a wall either: it shows up for the self, and the self can act on it, understand it, and partially overcome its limits.
Think of it like a video game:
Your character (the “I”) can move, jump, act.
The map, walls, enemies (the “not-I”) restrict what you can do.
But the more you play, the more skills you unlock, the more you can push past obstacles.
The game is this back-and-forth between your activity and the resistance of the world.

4. Why Fichte does this: going beyond Kant

Fichte is reacting to Kant.
Very roughly:

Kant says: we experience the world through mental structures (space, time, categories), but behind appearances there’s a “thing in itself” we can’t know directly.
That “thing in itself” is like a mysterious reality outside our reach.
Fichte thinks that’s a problem:
If this “thing in itself” is totally unknowable, why keep it?
It looks like a leftover of older metaphysics.
So Fichte says:
Drop the “thing in itself.”
Start with the self (the I) as the foundation.
The world we experience (the not-I) is not a mysterious stuff behind our experience; it is the way the self encounters limits and resistance in its own activity.
He’s not saying nothing exists outside your head.
He’s saying: philosophically, you should start with conscious activity and treat the world as the structured field of resistance in which that activity takes place.

5. The ethical and practical angle: striving

For Fichte, this isn’t just an abstract picture; it’s about human life:

The self is always striving: to know more, to act better, to become free, to realize moral goals.
The not-self (the world, circumstances, obstacles) is what gives that striving content and direction.
If there were no not-self:
No resistance → no effort.
No effort → no moral growth, no real action.
So the conflict between self and not-self isn’t a mistake; it’s the stage on which our freedom and morality play out.
You can think of life, for Fichte, as:
A self trying to realize freedom and moral law,
In a world that constantly resists it,
So that through that struggle, the self develops.

6. Quick recap in simple terms

Self (I):
The active, conscious subject. Not a passive thing, but an ongoing activity that is aware of itself.
Not-self (not-I):
Everything the self experiences as “not me”: nature, objects, obstacles, other bodies. It appears as what limits or resists the self’s activity.
Relationship:
The self and not-self mutually limit each other. The self discovers itself precisely through meeting resistance from the not-self, and the not-self is only given as a field of resistance for the self.
Big picture:
Fichte uses this to:
- Replace Kant’s mysterious “thing in itself” with a world understood through self-activity.
- Explain human life as a moral striving of the self in a resistant world.
  If you keep this image in mind—
  a self in motion, constantly running into a world that pushes back, and defining itself through that struggle—
  you’ve basically got Fichte’s self / not-self framework.

Arthur Schopenhauer criticism

1. Schopenhauer’s starting point: subject and object together

Schopenhauer thinks Fichte starts in the wrong place.

Fichte starts with a pure I (self) and tries to deduce the not-I (world) from it.
Schopenhauer says: that’s upside down.
For Schopenhauer, the basic fact of experience is:

“The world is my representation.”
That means:
Whenever you experience anything, there is always:
- a subject (the one who experiences), and
- an object (what is experienced).
  You never have a “bare I” first and then later add on a world. From the very beginning, subject and object come as a pair.
  So his first criticism is:
  
  You can’t legitimately start from a “self” alone and then pretend to logically create a “not-self.”
  Experience never gives you a lonely pure I in the first place.
  He thinks Fichte’s “I first, not-I second” is a kind of philosophical fantasy move, not something grounded in how consciousness actually works.

2. The self is not the ultimate reality

Fichte basically turns the self into the absolute foundation of everything:

The world is there as what the self encounters and posits.
The self has a kind of priority over the world.
Schopenhauer hates that move.
He agrees with Kant that there is a thing-in-itself behind appearances, but he says:
The thing-in-itself is Will (a blind, striving force),
not a rational “I,” not a moral ego, not a thinking subject.
Important point:
For Schopenhauer, the “I” that says “I” (your individual self) is just one appearance among others—one way the Will shows itself in the world.
It’s not the deepest level of reality; it’s a surface phenomenon.
So his second criticism is:

Fichte makes the conscious self into the ultimate reality.
Schopenhauer says: no, the self is just one representation among others, rooted in a deeper, non-rational Will.
From his viewpoint, Fichte’s system is too flattering to the ego: it makes reality depend on the “I,” instead of seeing the “I” as a small part of a much more powerful, impersonal Will.

3. Fichte “creates” the world from the I – Schopenhauer calls that absurd

Fichte says the self “posits” or “sets up” the not-self. That can sound like:

The world is in some sense a product of, or dependent on, the I.
Schopenhauer reads this as extreme subjectivism:

It sounds like philosophy is now saying, “The world is created by the ego,” instead of taking the world as something that pushes back on us independently.
He thinks this is:
Psychologically backwards (we clearly find ourselves already in a world we did not create), and
Philosophically dishonest (it looks like a trick to get rid of Kant’s thing-in-itself and make everything depend on the human subject).
So another of his criticisms is:

The idea that the I, by its own “positing,” conjures up the not-I is just an empty word game.
It explains nothing and ignores how overwhelmingly “given” and independent the world feels to us.
In his eyes, Fichte is dressing up a kind of “the world is all about me” stance in complicated jargon.

4. The moral / ideological complaint

Schopenhauer also thinks there is a motive behind Fichte’s system.
Very roughly, he thinks:

Fichte wants a system that supports freedom, moral duty, and a rational moral order, and
To get that, he builds a philosophy where the I is central, rational, and self-legislating.
Schopenhauer’s overall worldview is pessimistic and anti-optimistic:
He thinks the core of reality (Will) is blind, irrational striving, not a rational moral ego.
Life is suffering and struggle, not the self heroically shaping a rational world.
So he accuses Fichte (and later Hegel, etc.) of turning philosophy into edifying sermonizing:

You’re not describing reality honestly; you’re inventing a fancy system that makes the universe look morally and rationally satisfying.
In short: he thinks Fichte’s “absolute I” is wishful thinking dressed up as philosophy.

5. How Schopenhauer would re-draw Fichte’s picture

Take Fichte’s picture:

Absolute I → posits not-I → they limit each other.
Schopenhauer would rewrite it along these lines:

We always have subject + object together (world as representation).
You don’t logically build one out of the other.
Behind both subject and object there is Will (thing-in-itself): a blind striving that:
- Shows itself as the object (body, nature, etc.), and
- Shows itself as the subject (the inner experience of willing, desiring, striving).
The individual “I” is not the origin of the world; it is one expression of Will within a world that is fundamentally not about “me.”
So where Fichte says:

“The Self is the source and ground,”
Schopenhauer says:
“No, the Self is a surface. The ground is Will— and the self, like everything else, is its appearance.”

6. Quick summary in plain language

Schopenhauer’s main criticisms of Fichte’s self / not-self idea:

Wrong starting point:
You never experience a pure “I” first and then build a world from it. You always have “me-experiencing-something.” Subject and object come together.
Self is not ultimate reality:
Fichte turns the I into the absolute foundation. Schopenhauer says the I is just one phenomenon; the real “in-itself” is impersonal Will.
World is not created by the I:
The idea that the I “posits” the not-I makes it sound like the world depends on the ego. Schopenhauer thinks that’s an empty, almost ego-centric fantasy.
Philosophy turned into moral preaching:
He suspects Fichte is designing a system to protect ideas like moral freedom and a rational, meaningful universe, rather than describing reality as it actually is.
If you keep that contrast in mind—

Fichte: Self first, world derived from self.
Schopenhauer: World as representation (subject+object) plus a deeper Will; the self is not king—
you’ve basically captured Schopenhauer’s objection to Fichte’s self / not-self framework.

Johann Gottlieb Fichte