The greatest productive force is human selfishness.

All cats are not gray after midnight.

Being generous is inborn; being altruistic is a learned perversity.

Everybody lies about sex.

Sex should be friendly. Otherwise stick to mechanical toys; it's more sanitary.

You can have peace. Or you can have freedom. Don't ever count on having both at once.

Do not handicap your children by making their lives easy.

Love is that condition in which the happiness of another person is essential to your own.

A human being should be able to change a diaper, plan an invasion, butcher a hog, conn a ship, design a building, write a sonnet, balance accounts, build a wall, set a bone, comfort the dying, take orders, give orders, cooperate, act alone, solve equations, analyze a new problem, pitch manure, program a computer, cook a tasty meal, fight efficiently, die gallantly. Specialization is for insects.

In the absence of clearly defined goals, we become strangely loyal to performing daily trivia until ultimately we become enslaved by it.