Right discipline consists, not in external compulsion, but in the habits of mind which lead spontaneously to desirable rather than undesirable activities.

What the world needs is not dogma but an attitude of scientific inquiry.

I never held Negroes to be inherently inferior. The statement in Marriage and Morals refers to environmental conditioning. I have had it withdrawn from subsequent editions because it is clearly ambiguous.

The human heart as modern civilization has made it is more prone to hatred than to friendship. And it is prone to hatred because it is dissatisfied.

The chicken noticed that the farmer came every day to feed it. It predicted that the farmer would continue to bring food every day. Inductivists think that the chicken had "extrapolated" its observations into a theory, and that each feeding time added justification to that theory. Then one day the farmer came and wrung the chicken's neck. This inductively justifies the conclusion that induction cannot justify any conclusion.

Always remember that true happiness is not in getting what you want, but wanting what you already have. He who dies with the most toys is still dead. What is wanted is not the will to believe, but the will to find out, which is the exact opposite.

When the state intervenes to insure the indoctrination of some doctrine, it does so because there is no conclusive evidence in favor of that doctrine.