The man who produces while others dispose of his product is a slave.

Not selfishness, but precisely the absence of a self. Look at them. The man who cheats and lies, but preserves a respectable front. He knows himself to be dishonest, but others think he’s honest and he derives his self-respect from that, second-hand. The man who takes credit for an achievement which is not his own. He knows himself to be mediocre, but he’s great in the eyes of others.

Contrary to the ecologists, nature does not stand still and does not maintain the kind of equilibrium that guarantees the survival of any particular species - least of all the survival of her greatest and most fragile product: man.

Self-esteem is reliance on one's power to think. It cannot be replaced by one's power to deceive. The self-confidence of a scientist and the self-confidence of a con man are not interchangeable states, and do not come from the same psychological universe. The success of a man who deals with reality augments his self-confidence. The success of a con man augments his panic.

Reason is not automatic. Those who deny it cannot be conquered by it. Do not count on them. Leave them alone.

It's strange. There's your life. You begin it, feeling that it's something so precious and rare, so beautiful that it's like a sacred treasure. Now it's over, and it doesn't make any difference to anyone, and it isn't that they are indifferent, it's just that they don't know, they don't know what it means, that treasure of mine, and there's something about it that they should understand. I don't understand it myself, but there's something that should be understood by all of us. Only what is it? What?

The worst guilt is to accept an undeserved guilt — and that is what you have been doing all your life.