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.

Gargoyles were the complement to saints; Leonardo's caricatures were complementary to his untiring search for ideal beauty. And gargoyles were the expression of all the passions, the animal forces, the Caliban gruntings and groanings which are left in human nature when the divine has been poured away. Leonardo was less concerned than his Gothic predecessors with the ethereal parts of our nature, and so his caricatures, in their expression of passionate energy, merge imperceptibly into the heroic.

Devotion to the facts will always give the pleasures of recognition; adherence to the rules of design, the pleasures of order and certainty.

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.

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.

No nude, however abstract, should fail to arouse in the spectator some vestige of erotic feeling... The desire to grasp and be united with another human is so fundamental a part of our nature that our judgement of what is known as 'pure form' is inevitably influenced by it, and one of the difficulties of the nude as a subject for art is that these instincts cannot be hidden.