Religious freedom in an open society has the best prospects of flourishing to the extent that it expresses itself as freedom of religious inquiry.

In contrast to totalitarianism, democracy can face and live with the truth about itself.

Before impugning an opponent's motives, even when they legitimately may be impugned, answer his arguments.

The next time anyone asks you "What is Bertrand Russell's philosophy?" the correct answer is "What year, please?"

Stupidity is sometimes the greatest of historical forces.

Students rarely disappoint teachers who assure them in advance that they are doomed to failure.

Everyone recognizes a distinction between knowledge and wisdom. . . Wisdom is a kind of knowledge. It is knowledge of the nature, career, and consequences of human values. Since these cannot be separated from the human organism and the social scene, the moral ways of man cannot be understood without knowledge of the ways of things and institutions.