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

Ruthless, greedy, tyrannical, disreputable... they have had one principle worth all the rest, the principle of delight!

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.

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

Only the bad artists of the nineteenth century were frightened by the invention of photography; the good ones all welcomed it and used it.

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

I just don't think the moon is going to be an adequate substitute for the fact that we haven't addressed ourselves to clearing up the slums.