In the animal kingdom, the rule is, eat or be eaten; in the human kingdom, define or be defined.

If he who breaks the law is not punished, he who obeys it is cheated. This, and this alone, is why lawbreakers ought to be punished: to authenticate as good, and to encourage as useful, law-abiding behavior. The aim of criminal law cannot be correction or deterrence; it can only be the maintenance of the legal order.

Science can give us power over nature, but it cannot give us power over human nature.

The neurotic has problems; the psychotic has solutions.

Men are afraid to rock the boat in which they hope to drift safely through life's currents, when, actually, the boat is stuck on a sandbar. They would be better off to rock the boat and try to shake it loose.

The plague of mankind is the fear and rejection of diversity: monotheism, monarchy, monogamy and, in our age, monomedicine. The belief that there is only one right way to live, only one right way to regulate religious, political, sexual, medical affairs is the root cause of the greatest threat to man: members of his own species, bent on ensuring his salvation, security, and sanity.

It is easier to do one's duty to others than to one's self. If you do your duty to others, you are considered reliable. If you do your duty to yourself, you are considered selfish.