Everything in a story should be credible.

Man's brain, enlarged fortuitously, invented words in an ambitious attempt to learn how to think, only to have them usurped by his emotions. But we still try.

To say that a man is a reasoning animal is a very different thing than to say that most of man's decisions are based on his rational process. That I don't believe at all.

Labels are for the things men make, not for men. The most primitive man is too complex to be labeled.

Opinions, from experts, cost money.

The only two kinds of books could earn an American writer a living are cookbooks and detective novels.

There is only one object on earth that frightens me: a physicist working on a new trick.