Who is DeWeese from Zen and the Art of Motorcycle Maintenance and what is their importance?

DeWeese is an abstract painter who taught with the Narrator at Bozeman during his Phaedrus stage. DeWeese is a Romantic, but he seems somewhat open to understanding Classic influences, too. His home outside of Bozeman is cozy and well-kept, and he is a gracious host. He presents a picture of someone pursuing right living.