There are remarks that sow and remarks that reap.

Language disguises thought.

If you tried to doubt everything you would not get as far as doubting anything. The game of doubting itself presupposes certainty.

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

If, for example, you were to think more deeply about death, then it would be truly strange if, in so doing, you did not encounter new images.

Telling someone something he does not understand is pointless, even if you add that he will not be able to understand it.

Proof, one might say, does not merely shew that it is like this, but: how it is like this. It shows how 13+14 yield 27.