A good man will never suspect his friends of shady actions: this is part of his goodness. A good man will never be suspected by the public of using his goodness to screen villains: this is part of his utility

Unhappy business men, I am convinced, would increase their happiness more by walking six miles every day than by any conceivable change of philosophy.

If I were a medical man, I should prescribe a holiday to any patient who considered his work important.

Be isolated, be ignored, be attacked, be in doubt, be frightened, but do not be silenced.

The Axiom of Choice is necessary to select a set from an infinite number of socks, but not an infinite number of shoes.

Mysticism is, in essence, little more than a certain intensity and depth of feeling in regard to what is believed about the universe.

Ignore fact and reason, live entirely in the world of your own fantastic and myth-producing passions; do this whole-heartedly and with conviction, and you will become one of the prophets of your age.