Your writing is never as good as you hoped; but never as bad as you feared.

For the learning of every virtue there is an appropriate discipline, and for the learning of suspended judgment the best discipline is philosophy.

The sea, the stars, the night wind in waste places, mean more to me than even the human beings I love best.

Religions, which condemn the pleasures of sense, drive men to seek the pleasures of power. Throughout history power has been the vice of the ascetic.

I am delighted to know that Principia Mathematica can now be done by machinery. . . I am quite willing to believe that anything in deductive logic can be done by machinery.

When a man tells you that he knows the exact truth about anything you are safe in inferring that he is an inexact man.

Science may set limits to knowledge, but should not set limits to imagination.