Jaspers find Nietzsche's philosophy to be extraordinary not only because he foresaw all the monstrosities of the twentieth century, but also because he saw through them. Nietzsche claimed to be a philosopher of the future, but he was appropriated as a philosopher of Nazism. His work inspired a long study by Martin Heidegger and essays by a host of lesser disciples attached to the Third Reich. In 1935, however, Karl Jaspers set out...