Paul Rhoads On Drawing - 003.1: Eye Training II 

Third part of a series explaing the language of drawing. Paul Rhoads is an American painter living in France. He was the son of a painter George Rhoads and studied for 12+ years with a painter named Aaron Kurzen, who through training with the Art Students League in New York was able to pass on his understanding of drawing to his highschool students, Paul Rhoads being one of them.