The truth of a proposition has nothing to do with its credibility. And vice versa.

Never frighten a little man. He'll kill you.

Take sex away from people. Make it forbidden, evil. Limit it to ritualistic breeding. Force it to back up into suppressed sadism. Then hand the people a scapegoat to hate. Let them kill a scapegoat occasionally for cathartic release. The mechanism is ages old. Tyrants used it centuries before the word "psychology" was ever invented. It works, too.

Talking with a Martian is like talking with an echo. You don't get argument but you don't get results.

I'm afraid of coaching, of writer's classes, of writer's magazines, of books on how to write. They give me centipede trouble - you know the yarn about the centipede who was asked how he managed all his feet? He tried to answer, stopped to think about it, and was never able to walk another step.

One of the sanest, surest, and most generous joys of life comes from being happy over the good fortune of others.

Correct morality can only be derived from what man is — not from what do-gooders and well-meaning aunt Nellies would like him to be.