Eccentric artists are "the vagaries of humanity" that inhabit the deviant underside of Japanese society: This was the conclusion drawn by pre-World War II commentators on most early modern Japanese artists. Postwar scholarship, as it searched for evidence of Japan's modern roots, concluded the opposite: The eccentric, mad, and strange are moral exemplars, paragons of virtue, and shining hallmarks of modern consciousness. In recent years, the pendulum...