It is both startling and disconcerting, producing some of the most powerful and moving visual images to have appeared in the last thirty years. Freud--once dubbed "the Ingres of existentialism"--has almost single-handedly redefined the figurative painting of our time. No other living artist possesses his ability to paint the texture and thinness of skin over flesh, and his distinctive portraits have a haunting quality that makes them impossible to...