Here is a study, by a recognized master in the field of intellectual history, of the challenge put by Machiavelli to the idea that there is a universal moral law governing human behavior. Should the political leader act according to the maxim of my country right or wrong, or should elites follow the principle of let justice be done? Friederich Meinecke, an acknowledged founder of cultural history as a field, follows the discussion of this theme from Machiavelli through such major figures as Richelieu, Frederick the Great, and Hegel, and presents conclusions of enduring significance.