Tractatus Logico-Philosophicus - Main Theses

Main Theses

There are seven main propositions in the text. These are:

  1. The world is everything that is the case.
  2. What is the case (a fact) is the existence of states of affairs.
  3. A logical picture of facts is a thought.
  4. A thought is a proposition with a sense.
  5. A proposition is a truth-function of elementary propositions. (An elementary proposition is a truth-function of itself.)
  6. The general form of a proposition is the general form of a truth function, which is: . This is the general form of a proposition.
  7. Whereof one cannot speak, thereof one must be silent.

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