When you are philosophizing you have to descend into primeval chaos and feel at home there.

Words are probes. Some reach very deep, some only to a little depth.

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

If in life we are surrounded by death, so too in the health of our intellect by madness.

You might say that certain words are only pegs to hang intonations on.

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.

It is possible--indeed possible even according to the old conception of logic--to give in advance a description of all 'true' logical propositions. Hence there can never be surprises in logic.