PERSUASION - APPEAL - Logos, Ethos and Pathos Compiled by Sue Hamilton-Smith 4/11/10 The Ancient Greeks identified three methods to appeal to an audience: Logos, Ethos and Pathos. Aristotle (384- 322 BC) is generally credited with developing the basics of the system of rhetoric, the art of using language effectively and persuasively. Logos (logic, reason) Lo..