Every work of art is, in a way, an essay. We simply cannot say everything about a subject. What we choose to include and exclude tells the viewer how we understand our world. And how we draw tells the viewer how well we see and understand our world. Rudolf Arnheim, the great psychologist, was correct when he pointed out that ?an inability to draw is to some extent an inability to see.? Our ability as teachers of Art should be based on our ability to teach the student how to see, and a large part of seeing has to do with drawing.