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Rhetoric

Key terms
Its nature
Its parts
The orator
Its use

Persuasion

What is rhetoric for? Rhetoric is the art of speaking so as to bring others to agree or to act, and persuasion is the result it aims at. These readings ask whether persuasion is the whole business of the art, and how it differs from teaching someone the truth.

4 readings

In Plato’s Gorgias, Socrates presses the rhetorician Gorgias for a definition of his art, and Gorgias agrees that rhetoric is “the artificer of persuasion”. The dialogue is the chief ancient examination of rhetoric and its claim to be an “art”. The exchange stands under this term as the definition from which the rest of the argument proceeds.

A little later in the Gorgias, Socrates distinguishes “having learned” from “having believed” and asks whether there is a “false belief as well as a true”. The question separates the persuasion rhetoric produces from instruction in knowledge. It sits under this term as the point at which the effect of persuasion is examined.

In Book I, part 2 of Aristotle’s Rhetoric, he gives his definition of the art as “the faculty of observing in any given case the available means of persuasion”. The Rhetoric is the first systematic treatise on the subject and the foundation of later teaching. The sentence stands under this term as the definition itself.

Lecture XXV of Hugh Blair’s Lectures on Rhetoric and Belles Lettres, first published in 1783, treats eloquence and its ends. The Lectures were used as a text in schools and colleges for generations. Here he distinguishes “convincing” from “persuading”, and the passage stands under “Key terms” for that distinction.