An action, to have moral worth, must be done from duty.

To feel our character, our personality, and our personal, hard-won history fade from being is to be exposed to whatever lies beneath these comforting, operational conveniences. What remains when the conscious and functioning self has been erased is mankind's fundamental condition _ irrational, violent, guilt-wracked, despairing, and mad.

There is no such thing as divine law enforced by mankind. Cosmic laws are self-sustaining mechanisms that do not require our assistance to function.

nowhere in this universe does evil exist except in the mind of mankind. only man can take an idea or symbol which is so simple and innocent, and then twist it and corrupt it until it is something to hate or kill one another over.

The fatal error of much science fiction has been to subscribe to an optimism based on the idea that revolution, or a new gimmick, or a bunch of strong men, or an invasion of aliens, or the conquest of other planets, or the annihilation of half the world--in short, pretty nearly anything but the facing up to the integral and irredeemable nature of mankind--can bring about utopian situations. It is the old error of the externalization of evil.

The beauty of the human race is not in its victory over evil, but the attempt.