"There is at the back of every artist’s mind something like a pattern and a type of architecture. The original quality in any man of imagination is imagery. It is a thing like the landscape of his dreams; the sort of world he would like to make or in which he would like to wander, the strange flora and fauna, his own secret planet, the sort of thing he likes to think about. This general atmosphere, and pattern or a structure of growth, governs all his creations, however varied."