ABSTRACT What are the sources of political myths? Useful starting points for answering this question can be found in the fiction of Cervantes and the political philosophies of Machiavelli, Erasmus, and Leo Strauss. These writers, who sought to defuse clashes of custom and of religion, emphasized the need to pay attention to the consequences of false belief, without lapsing into cynicism. In this, they were the ultimate idealists, whose insights might temper the dogmas of the modern ideologue.