I have come to realize that an early symptom of approaching mental illness is the belief that one's work is terribly important. If you consider your work very important you should take a day off.

Suppose atomic bombs had reduced the population of the world to one brother and sister; should they let the human race die out?

A sense of duty is useful in work but offensive in personal relations. People wish to be liked, not to be endured with patient resignation.

No man is liberated from fear who dare not see his place in the world as it is; no man can achieve the greatness of which he is capable until he has allowed himself to see his own littleness.

Affection cannot be created; it can only be liberated.

Religion is based ... mainly upon fear ... fear of the mysterious, fear of defeat, fear of death. Fear is the parent of cruelty, and therefore it is no wonder if cruelty and religion have gone hand in hand. My own view on religion is that of Lucretius. I regard it as a disease born of fear and as a source of untold misery to the human race.

Who ever heard a theologian preface his creed, or a politician conclude his speech with an estimate of the probable error of his opinion?