Have you ever, looking up, seen a cloud like to a centaur, a leopard, a wolf, or a bull?

In the past, men created witches; now they create mental patients.

Appearances often are deceiving.

Once something becomes discernible, or understandable, we no longer need to repeat it. We can destroy it.

There is not so contemptible a plant or animal that does not confound the most enlarged understanding.

Nothing is so easy as to deceive one’s self; for what we wish, that we readily believe.

The mind is led on, step by step, to defeat its own logic.

Man is always a wizard to man, and the social world is at first magical.

Faith is to believe what you do not see; the reward of this faith is to see what you believe.

There are times when reality becomes too complex for oral communication. But legend gives it a form by which it pervades the whole world.

The most beautiful emotion we can experience is the mysterious. It is the fundamental emotion that stands at the cradle of all true art and science.

To blow and to swallow at the same time is not easy; I cannot at the same time be here and also there.

To ensure the adoration of a theorem for any length of time, faith is not enough; a police force is needed as well.