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

I act with complete certainty. But this certainty is my own.

It is so characteristic, that just when the mechanics of reproduction are so vastly improved, there are fewer and fewer people who know how the music should be played.

It is truly strange how long it takes to get to know oneself. I am now sixty two years old, yet just one moment ago I realised that I absolutely love lightly toasted bread. Simultaneously, I also realised that I loathe bread when it is heavily toasted. For almost sixty years, and quite unconsciously, I have been experiencing inner joy or total despair at my relationship with grilled bread.

A philosopher who is not taking part in discussions is like a boxer who never goes into the ring.

I think I summed up my attitude to philosophy when I said: philosophy ought really to be written only as a poetic composition.

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.