Language disguises thought.

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

Logic is not a body of doctrine, but a mirror-image of the world. Logic is transcendental.

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

Not how the world is, but that it is, is the mystery.

I am sitting with a philosopher in the garden; he says again and again 'I know that that’s a tree', pointing to a tree that is near us. Someone else arrives and hears this, and I tell him: 'This fellow isn’t insane. We are only doing philosophy.