Courage, not cleverness; not even inspiration, is the grain of mustard that grows up to be a great tree.

When philosophers use a word--"knowledge," "being," "object," "I," "proposition," "name"--and try to grasp the essence of the thing, one must always ask oneself: is the word ever actually used in this way in the language-game which is its original home?--What we do is to bring words back from their metaphysical to their everyday use.

What has history to do with me? Mine is the first and only world! I want to report how I find the world. What others have told me about the world is a very small and incidental part of my experience. I have to judge the world, to measure things.

I don't know why we are here, but I'm pretty sure that it is not in order to enjoy ourselves.

Logic takes care of itself; all we have to do is to look and see how it does it.

A philosopher always finds more grass to feed upon in the valleys of stupidity than on the arid heights of intelligence.

Where two principles really do meet which cannot be reconciled with one another, then each man declares the other a fool and a heretic