The difference between what we see and a sheet of white paper with a few thin lines on it is very great. Yet this abstraction is one which we seem to have adopted almost instinctively at an early stage in our development, not only in Neolithic graffiti but in early Egyptian drawings. And in spite of its abstract character, the outline is responsive to the least tremor of sensibility.

Fine colour implies a unified relationship, in which each part is subordinate to the whole, and the transitions between them are felt to be as precious and beautiful as the colours themselves. In fact, the colours themselves must be continuously modified and broken as part of the transition.

Antique art has come down to us in a fragmentary condition, and we have virtuously adapted our taste to this necessity. Almost all our favorite specimens of Greek sculpture, from the sixth century onward, were originally parts of compositions, and if we were faced with the complete group in which the Charioteer of Delphi was once a subsidiary figure, we might well experience a moment of revulsion. We have come to think of the fragment as more vivid, more concentrated, and more authentic.

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.

Leonardo is the Hamlet of art history whom each of us must recreate for himself.

Art...must do something more than give pleasure: it should relate to our own life so as to increase our energy of spirit.

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.