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

The face is the soul of the body.

To convince someone of the truth, it is not enough to state it, but rather one must find the path from error to truth.

If I have exhausted the justifications, I have reached bedrock and my spade is turned. Then I am inclined to say: 'This is simply what I do.

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

No one likes having offended another person; hence everyone feels so much better if the other person doesn't show he's been offended. Nobody likes being confronted by a wounded spaniel. Remember that. It is much easier patiently - and tolerantly - to avoid the person you have injured than to approach him as a friend. You need courage for that.

All mathematics is tautology.