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Tractatus Logico-Philosophicus · Chapter

3.5 explained

The propositional sign, when applied and thought, is the thought itself.

What happens

The propositional sign, when applied and thought, is the thought itself.

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Narrative arc

Story tension across the book.

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

This passage marks the story’s dramatic climax because it presents the moment when the protagonist’s obsessive…

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Themes in this chapter

  • Picture Theory of Language

    The propositional sign, when applied and thought, constitutes the thought, reflecting the picturing relation.

Characters to notice

Key passages

  • “The applied, thought, propositional sign, is the thought.”

    The propositional sign, when it is used and entertained in thinking, is identical with the thought.

    Clarifies the identity of the thought with its expression in use.