I think one of the things you and I have to learn is that we have to live without the consolation of belonging to a Church.... Of one thing I am certain. The religion of the future will have to be extremely ascetic, and by that I don't mean just going without food and drink.

Our greatest stupidities may be very wise.

The world is everything that is the case.

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

What is left over if I subtract the fact that my arms goes up from the fact that I raise my arm?

The eternal life is given to those who live in the present.

The object of philosophy is the logical clarification of thought.