 In ancient times, the First Sophistic is a movement motivated by the notion that one can teach the art of logos in a way that can be effectively employed in public argument and debate. In the century that follows, Aristotle’s logical and rhetorical works — notably the Prior Analytics and the Rhetoric — provide a systematic account of logic and argument which is applicable to an impressively broad range of real life arguments. Today, they remain important works that inform discussions of informal logic. 