Tractatus Logico Philosophicus

...is the only book Ludwig Wittgenstein wrote in his career. Here's its abstract.


Abstract
1. The world is all 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 truth-function is [p, E, N(E)]. This is the general form of a proposition.
7. What we cannot speak about we must pass over in silence.

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