My propositions serve as elucidations in the following way: anyone who understands me eventually recognizes them as nonsensical, when he has used them--as steps--to climb up beyond them. (He must, so to speak, throw away the ladder after he has climbed up it.) He must transcend these propositions, and then he will see the whole world aright.

Logic must look after itself. In a certain sense, we cannot make mistakes in logic.

Genius is talent in which character makes itself heard.

Propositions show what they say: tautologies and contradictions show that they say nothing.

Nothing is more important for teaching us to understand the concepts we have than to construct fictitious ones.

It would strike me as ridiculous to want to doubt the existence of Napoleon; but if someone doubted the existence of the earth 150years ago, perhaps I should be more willing to listen, for now he is doubting our whole system of evidence.

Philosophy is a battle against the bewitchment of our intelligence by means of language.