Peter Drucker (1909–2005) is celebrated as perhaps the greatest management guru, and one of the greatest futurists, of the twentieth century, but he has rarely been taken seriously as an intellectual. Raised in Vienna among a cohort of émigré academics that included Schumpeter, Hayek, and von Mises, among others, Drucker was both deeply learned and incredibly prolific. This essay seeks to rehabilitate Drucker as a humanistic social thinker, reinterpreting his earliest writings in German, his two major treatises on totalitarianism and the crisis of capitalism published after he emigrated to the US, his debate with Polanyi and engagement with Kierkegaard, and his early postwar writings on management theory and the knowledge society. It identifies in Drucker's Protestant faith a deep and abiding set of intellectual, ethical, and spiritual commitments helping him to navigate a path out of Nazi Germany and assume a position of enormous influence in American business life.