I believe in courtesy, the ritual by which we avoid hurting other people's feelings by satisfying our own egos.

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 various parts of the body cannot be perceived as simple units and have no clear relationship to one another. In almost every detail the body is not the shape that art has led us to believe it should be.

This became Delacroix 's theme: that the achievements of the spirit all that a great library contained were the result of a state of society so delicately balanced that at the least touch they would be crushed beneath an avalanche of pent-up animal forces.

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.

Changes in the structure of society are not brought about solely by massive engines of doctrine. The first flash of insight which persuades human beings to change their basic assumptions is usually contained in a few phrases.

I believe order is better than chaos, creation better than destruction. I prefer gentleness to violence, forgiveness to vendetta. On the whole I think that knowledge is preferable to ignorance, and I am sure that human sympathy is more valuable than ideology. I believe that in spite of the recent triumphs of science, men haven't changed much in the last two thousand years; and in consequence we must try to learn from history.