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Rhetoric (from Greek ρητωρ, rhtr, "orator") is one of the three original liberal arts or trivium (the other members are dialectic and grammar). While it has meant many different things during its 2500-year history, it is generally described today as the art of persuasion through language.

Rhetoric began in ancient Greece. The first written manual is attributed to Corax[?] and Tisias. Rhetoric was popularized in the 5th century B.C. by itinerant teachers known as sophists, the best known of whom were Protagoras, Gorgias, and Isocrates.

Plato is the great historical enemy of the sophistic movement. For Plato, the essence of philosophy lay in the process of dialectic, in which reason and discussion progressively lead to the discovery of important truths. Plato believed that the sophists cared not for the truth of an argument, but only how they might appear to win it.

Two of Plato's dialogues are especially focused upon rhetoric. The Gorgias emphasizes Plato's contention that the sophists value style over substance. Philosophy and rhetoric are related in the same way as are medicine and cosmetics. That is, medicine (like philosophy) is concerned with what is truly best for its subjects, whereas cosmetics (like rhetoric) is concerned solely with appearances. The Phaedrus was written after the Gorgias. While it continues Plato's critique of rhetoric, he also holds out the possibility that a rhetoric may yet be devised which is true and noble.

In fact, the rhetoric developed by Plato's student, Aristotle, can be seen as just such a rhetoric. In the first sentence of The Art of Rhetoric (Ars Rhetorica), Aristotle immediately describes rhetoric as the counterpart of dialectic. By this, he means that, while dialectical methods are necessary to find truth, rhetorical methods are required to communicate it.

Aristotle's systematic description of rhetoric completely dominated rhetorical thought through the middle ages and beyond. His chief emphasis is upon the three kinds of proof that can be offered on behalf of an argument. Logos consists of the use of logic and reason in constructing an argument. Pathos concerns emotional appeals. Ethos focuses upon how the character of a speaker influences an audience to consider him to be believable. While Western philosophy has tended to emphasize Logos, Aristotle's three bases of evidence provide a philosophical foundation for the broadly conceived psycho-social or behavioral sciences where accounting for non-rational factors in human behavior is necessary for explanatory completeness. Especially professions or occupations in applied social sciences, such as psychotherapy are based in the practice of persuasion, or rhetoric in Aristotle's broad conception.

The Romans were great borrowers, and they found much value in Aristotle's rhetoric. Cicero and Quintilian were chief among Roman rhetoricians, and their work is clearly an extension of Aristotle's. In particular, Quintilian codified rhetorical studies under five canons that would persist for centuries in academic circles. Inventio (invention) is the process that leads to the development and refinement of an argument. Once an argument is developed, it is up to dispositio (disposition, or arrangement) to determine how it should be organized for greatest effect. Once the speech content is known and the structure is determined, the next steps involve pronuntiatio (language choice) and elocutio (delivery). Finally, memoria (memory) comes to play as the speaker recalls each of these elements during the speech.

In the 16th century, after long domination by Scholasticism and Aristotelian thinking, Petrus Ramus[?] proposed to reorganize the school curriculum of the day. Breaking with the traditional divisions of the liberal arts, he proposed something similar to the contemporary division of universities into multiple schools and departments of study (in fact, Ramus is the ultimate source of this organizational scheme). His efforts succeeded. The five components of rhetoric no longer lived under the common heading of rhetoric. Instead, invention and disposition were determined to fall under the heading of philosophy, while language, delivery, and memory were all that remained for rhetoric.

Once stripped of its more substantial elements, rhetoric became a much less prestigious topic of study. Much as Plato originally condemned the rhetoric of the sophists for its lack of concern for truth, rhetoric now came to be associated with emptiness: it ceased to be connected with ideas. In popular use, this connotation persists to this day. However, the term is still used in a deeper and more constructive sense in the study of human communication.

(Definitions, discussion of conflicting opinions, ending with synthesis: a working general definition of rhetoric for this article)

  • Classical (Greek)
    • Corax[?] (5th century BC) -- produced first written manual of rhetoric
    • Gorgias (483?-376? BC) -- father of systematic study of rhetoric
    • Isocrates (436-338 BC) -- foremost teacher of oratory in the ancient world
    • Plato (427-347 BC) -- outlined the differences between true and false rhetoric
    • Aristotle (384-322 BC) -- created most influential systemization of rhetoric ever written -- The Art of Rhetoric
    • Libanius (AD 314-394) -- prominent practioner and teacher in the Later Roman Empire
  • Classical (Roman)
    • Cicero (106-43 BC) -- Great Roman orator and philsopher
    • Quintilian (AD 35-100) -- Imperial professor of rhetoric, complete system of rhetorical education
  • Medieval
  • Renaissance
    • Desiderius Erasmus (AD 1466?-1536) -- Dutch scholar, wrote on style and composition
    • Juan Luis Vives[?] (AD 1492-1540) -- established pattern of rhetorical education in English
    • Leonard Cox[?] (AD ??-??) -- produced first rhetoric handbook in English --Arte or Crafte of Rhetoryke (1530)
    • Thomas Wilson[?] (AD 1525?-1581) -- neoclassicist, wrote most popular English Renaissance rhetoric handbook - The Arte of Rhetorique (1553)
  • Modern
    • (there's quite a few here; I need to do a little sifting first)
  • Contemporary

Current State of Rhetorical Study

Rhetorical theory today is much more heavily influenced by the research results and research methods of the behaviorial sciences and by theories of literary criticism than by ancient Rhetorical theory.

See also, Visual Rhetoric[?].

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