This Sourcebook is intended for students of liberal arts and great books. It treats such books as primary sources for inquiring into the nature of hu-man speech because they clarify the terms and stakes of perennial ques-tions thinking human beings ask themselves about persuasive speaking. By crystallizing viable claims about the nature of what we confront in politics and society--live claims for us to confront in our own, with the stakes of that confrontation being live as well--they originate a dialectic with one another and with us their readers.

Cicero called rhetoric a liberal art necessary for every citizen of a free republic. In the polities of ancient Greece and Rome, rhetoric was politi-cally potent because oratory was the regular means of political decision. Words were decisive, often a matter of life and death, not merely for in-dividuals but for peoples. In human milieux where human speech is so politically decisive, reflection upon its nature became keen.

The selections of this sourcebook have been arranged in three se-quences. The first two sequences comprise philosophical dialogues on the ends of rhetoric. Selections from Plato'sGorgias, Phaedrus, andApol-ogyexamine the rhetorician or teacher of rhetoric, and then Cicero'sDe oratoreoffers us a dialectic among practitioners about its practice. The philosophical dialogues on the art's intended ends and causative effects provide the theoretical and ethical context for examining its means. These philosophical dialogues are thus propaedeutic to the third se-quence, which focusses on the art itself with selections from Aristotle's treatiseOn Rhetoric, paired with orations from Thucydides'History of the Peloponnesian War.