Egon Schiele was a meteor that flashed across the galaxy of Viennese art at the beginning of the last century. Although he lived only twenty-eight years--dying quite suddenly of influenza in 1918 just as World War I came to an end--he left a stunning pictorial oeuvre. Schiele's obsession with sexuality, his own and that of others, made him at once a voyeur and a participant in that sexual imperative which Freud was concurrently plumbing with such...