Until Abstract Expressionism you had to have something to paint about, some kind of subject matter. Even though Kandinsky and Arthur Dove were improvising earlier, it didn't take. They had to have symbols, suggested natural images or geometry, which was something real structurally. That gave them something to paint about. What was new was the idea that something you looked at could be like something you heard.

Kenneth Noland, p. 8 - 'Conversation with Karen Wilkin' (1986-1988)