Silence is worse; all truths that are kept silent become poisonous.

All preachers of morality, as also all theologians have a bad habit in common: all of them try to persuade man that he is very ill, and that a severe, final, radical cure is necessary.

A refined soul is distressed to know that someone owes it thanks; a crude soul, to know that it owes someone thanks.

We seldom break our leg so long as life continues a toilsome upward climb. The danger comes when we begin to take things easily and choose the convenient paths.

You must be born for your physician, otherwise you are bound to perish because of your physician.

A book calls for pen, ink, and a writing desk; today the rule is that pen, ink, and a writing desk call for a book.

Do you call yourself Free? It is your ruling thought that I would hear, and not that you have escaped from a yoke.