The Natural Way to Draw, by Kimon Nicolaïdes.

"Tragedy is caused by a man's nature and environment and is as irrelevant to painting as it is to other professions. Many young art students react aginat the prosaic world and feel that they must be "different". They are afraid if they act like other people they will be like other people."

"Stephen Wolfram is the creator of Mathematica and is widely regarded as the most important innovator in scientific and technical computing today." - Stephen Wolfram