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.

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.

If one shoots at a king, one must not miss.

Religious tolerance has developed more as a consequence of the impotence of religions to impose their dogmas on each other than as a consequence of spiritual humility in the quest for understanding first and last things.

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

Everyone who remembers his own education remembers teachers, not methods and techniques. The teacher is the heart of the educational system.