"My work consists of two parts: the one presented here plus all that I have not written. And it is precisely this second part that is the important one."

"Philosophy is a fight against the fascination which forms of expression exert upon us."

"My fundamental conception is that the 'logical constants' are not representatives; that there can be no representatives of the logic of facts."

"The meaning of a word is its use in the language."

"Not to understand a grammar is to be unable to understand an idiom."