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Tractatus Logico-Philosophicus · Chapter

3.314 explained

Wittgenstein asserts that an expression only has meaning within the context of a proposition and that every variable can be understood as a propositional variable, including variable names.

What happens

Wittgenstein asserts that an expression only has meaning within the context of a proposition and that every variable can be understood as a propositional variable, including variable names.

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Story tension across the book.

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

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Themes in this chapter

  • Logical Atomism

    The claim that expressions have meaning only in propositions reflects the atomistic view that meaning is context-dependent within logical structures.

  • Limits of Language and Thought

    The focus on propositional variables highlights the boundaries of meaningful expression within language.

Characters to notice

Key passages

  • “An expression has meaning only in a proposition.”

    A word or symbol only gains significance when used within a complete statement.

    Emphasizes the context-dependence of meaning.

  • “Every variable can be conceived as a propositional variable.”

    Any variable can be thought of as standing in for a proposition.

    Extends the concept of variables to the logical form of propositions.