Machiavelli is popularly known as a teacher of tyrants, a key proponent of the unscrupulous "Machiavellian" politics laid down in his landmark political treatise The Prince. Others cite the Discourses on Livy to argue that Machiavelli is actually a passionate advocate of republican politics who saw the need for occasional harsh measures to maintain political order. Which best characterizes the teachings of the prolific Italian philosopher?...