In time of war all countries behave equally badly, because the power of action is handed over to stupid and obstinate men.

Those who wish, in the interest of morality, to reduce Leonardo, that inexhaustible source of creative power, to a neutral or sexless agency, have a strange idea of doing service to his reputation.

The history of art cannot be properly understood without some reference to the history of science. In both we are studying the symbols by which man affirms his mental scheme, and these symbols, be they pictorial or mathematical, a fable or formula, will reflect the same changes.

A visual experience is vitalizing. Whereas to write great poetry, to draw continuously on one's inner life, is not merely exhausting, it is to keep alight a consuming fire.

Over and above the political, economic, sociological, and international implications of racial prejudices, their major significance is that they place unnecessary burdens upon human beings.

The great achievement of the Catholic Church lay in harmonizing, civilizing the deepest impulses of ordinary, ignorant people.

The recognized achievements of some Negroes, despite rigid racial barriers, indicate that society by its prejudices may be depriving itself of valuable contributions from many others. It is now doubtful whether America can afford the luxury of such a waste of human resources.