In order to be able to set a limit to thought, we should have to find both sides of the limit thinkable (i.e. we should have to be able to think what cannot be thought).

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?

Like everything metaphysical the harmony between thought and reality is to be found in the grammar of the language.

Just be indipendent of the external world, so you don't have to fear for what's in it.

One can mistrust one's own senses, but not one's own belief.

Only let's cut out the transcendental twaddle when the whole thing is as plain as a sock on the jaw.

You can't think decently if you're not willing to hurt yourself