After the unexpected collapse of the Soviet Union, the categories of "Left" and "Right" continue to be used to describe political ideologies, despite their historic ambiguity and a shared utopian root. The idealistic belief that a perfect world is possible continues to dwell on existential hope for messianic salvation. This belief lay at the heart of the apocalyptic narratives of the Bible and reflects what the Greeks called hubris, a fatal and destructive form of conceit. This conceit reemerged in the Gnostic sects of early Christianity, then again in medieval millenarianism, Jacobinism,...