Almost in the same way as earlier physicists are said to have found suddenly that they had too little mathematical understanding to be able to master physics; we may say that young people today are suddenly in the position that ordinary common sense no longer suffices to meet the strange demands life makes. Everything has become so intricate that for its mastery an exceptional degree of understanding is required. For it is not enough any longer to be able to play the game well; but the question is again and again: what sort of game is to be played now anyway?

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.

That which cannot be said must not be said. That which cannot be said, one must be silent thereof.

It is much easier to bury a problem than to solve it.

We are asleep. Our Life is a dream. But we wake up sometimes, just enough to know that we are dreaming.

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

A tautology's truth is certain, a proposition's possible, a contradiction's impossible.