The last stand of paganism in the tumultuous fourth century is a rare example of a moment when two menathe Roman emperors Constantine, who initiated the Christian revolution that formed the future, and Julian, who later tried but failed to restore paganismaliterally changed the history of the world. "God Against the Gods," breaking a long-lived taboo, reveals monotheismas dark side and polytheismas bright one, illuminating the ancient roots of todayas most bloody conflicts as well as the cherished idea of religious liberty.