I won't say 'See you tomorrow' because that would be like predicting the future, and I'm pretty sure I can't do that.

What is troubling us is the tendency to believe that the mind is like a little man within.

This procedure [selecting the simplest law], however, has no logical justification but only a psychological one.

Nowadays it is the fashion to emphasize the horrors of the last war. I didn't find it so horrible. There are just as horrible things happening all round us today, if only we had eyes to see them.

It is so characteristic, that just when the mechanics of reproduction are so vastly improved, there are fewer and fewer people who know how the music should be played.

The philosophical I is not the human being, not the human body or the human soul with the psychological properties, but the metaphysical subject, the boundary (not a part) of the world.

Belief in the causal nexus is superstition.