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Tractatus Logico-Philosophicus · Chapter

4.1121 explained

Wittgenstein distinguishes philosophy from psychology, asserting that the theory of knowledge is the philosophy of psychology.

What happens

Wittgenstein distinguishes philosophy from psychology, asserting that the theory of knowledge is the philosophy of psychology. He compares his study of sign-language to traditional philosophical investigations of thought processes, but warns against the danger of becoming entangled in unessential psychological inquiries.

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Narrative arc

Story tension across the book — this chapter sits in Exposition.

SetupAftermathClimax
  • Setup
  • Escalation
  • Breaking point
  • Aftermath
  • Closing

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Themes in this chapter

Characters to notice

  • Mr. Wittgenstein

    The author presenting his views on the relation between philosophy and psychology.

Key passages

  • “Psychology is no nearer related to philosophy, than is any other natural science.”

    Philosophy is no more connected to psychology than to any other empirical science.

    Wittgenstein asserts the autonomy of philosophy from psychology.

  • “Does not my study of sign-language correspond to the study of thought processes which philosophers held to be so essential to the philosophy of logic?”

    Isn't my analysis of sign-language similar to the study of thought that philosophers considered crucial for logic?

    Wittgenstein acknowledges a parallel but warns against psychological pitfalls.