The convention by which the great events in biblical or secular history could be enacted only by magnificent physical specimens, handsome and well-groomed, went on for a long time — till the middle of the nineteenth century. Only a very few artists — perhaps only Rembrandt and Caravaggio in the first rank — were independent enough to stand against it. And I think that this convention, which was an element in the so-called grand manner, became a deadening influence on the European mind. It deadened our sense of truth, even our sense of moral responsibility.

Ch. 5: The Hero as Artist - Civilisation (1969)