Five-minute digest
Rhetoric
Summary
Aristotle's Rhetoric opens with a provocation: rhetoric is the counterpart of dialectic, not a knack for flattery. Against the handbook writers of his day, who taught tricks for rousing juries and said nothing about argument, Aristotle insists that the art lies chiefly in proofs, above all the enthymeme, a syllogism drawn from probabilities and signs that a popular audience can follow. He defines rhetoric as the faculty of observing, in any given case, the available means of persuasion, and he likens it to medicine, whose task is not to guarantee a cure but to do everything the case allows. He also answers the charge that persuasion is dangerous: like strength, health and wealth, speech can be misused, yet a person who cannot defend himself with reason is more shamefully helpless than one who cannot defend himself with his limbs. Book I distinguishes three kinds of oratory by their audience and time: deliberative speech advises an assembly about the future and aims at the expedient; forensic speech accuses or defends before a court about the past and aims at the just; epideictic speech praises or blames before spectators in the present and aims at the noble. For each kind Aristotle gathers the common opinions a speaker must know: the parts of happiness and the goods men seek, the topics of public policy, the nature of virtue for praise, and the motives, pleasures and circumstances of wrongdoing for the courts, ending with the non-technical proofs such as laws, witnesses, contracts and oaths. Book II turns to the other two proofs the spoken word provides. The speaker's character persuades when he shows good sense, good moral character and goodwill. The hearer's emotions persuade because people judge differently when angry or calm, friendly or hostile, so Aristotle defines anger, calmness, friendship, enmity, fear, confidence, shame, kindness, pity, indignation, envy and emulation, each by its object, its grounds and the state of mind in which it arises. He then sketches the characters of youth, old age and the prime of life, and the effects of birth, wealth and power, before returning to argument: examples, maxims, the common topics of the possible and of degree, and twenty-eight lines of proof together with the fallacies that imitate them. Book III treats style and arrangement. Good style must be clear and appropriate, neither mean nor inflated; metaphor gives clearness, charm and distinction; rhythm, periodic sentences and liveliness bring an idea before the eyes. The work closes with the parts of a speech, reduced at bottom to two, statement and proof, with introduction and epilogue serving them.
Top Lessons
Argument is the body of persuasion
Aristotle calls proof the substance of the art and everything else an accessory. The enthymeme reasons from what is usually true to a conclusion a crowd can follow in a few steps, which means a speaker who wants to move people must still give them reasons. Students can test their own speeches by stripping away tone and asking what the enthymeme actually is.
Why a good speaker must be able to argue the other side
Aristotle says we must be able to persuade on opposite sides, not to make people believe what is wrong, but to see clearly what the facts are and to refute an unfair opponent. He adds that true and better things are by nature easier to prove. The art is morally neutral as a capacity yet ordered toward truth in its proper use.
Character that is shown in the speech itself
Ethos for Aristotle is produced by what the speaker says, not borrowed from reputation: hearers trust one who displays good sense, good moral character and goodwill. A speaker who lacks any one of the three may be competent yet untrustworthy, or honest yet foolish, or wise yet indifferent to his hearers. The point joins rhetoric to ethics and to the formation of real virtue.
Emotions are judgments that can be reasoned with
Book II treats anger, fear, pity and envy not as blind forces but as responses to how a situation appears: anger answers a perceived unjustified slight, fear a mental picture of coming harm, pity undeserved misfortune. Because emotions rest on appearances, a speaker can rightly correct a false appearance or wrongly manufacture one, and a hearer can learn to ask whether a feeling fits the facts.
Clarity as a courtesy to the hearer
Book III begins with the principle that speech failing to convey a plain meaning fails at its basic task. Aristotle prizes metaphor because it lets hearers grasp something new quickly, yet he mocks Gorgias's overreaching figures. Style is a matter of fitness to subject and audience, which makes it an exercise of judgment rather than ornament.
Verified Quotes
Frequently cited
“Rhetoric is the counterpart of Dialectic”
“things that are true and things that are better are, by their nature, practically always easier to prove and easier to believe in”
“it is not the function of medicine simply to make a man quite healthy, but to put him as far as may be on the road to health”
Frequently cited
“Rhetoric may be defined as the faculty of observing in any given case the available means of persuasion”
“We believe good men more fully and more readily than others”
“good sense, good moral character, and goodwill”
Frequently cited
“Anger may be defined as an impulse, accompanied by pain, to a conspicuous revenge for a conspicuous slight directed without justification towards what concerns oneself or towards what concerns one's friends”
“Fear may be defined as a pain or disturbance due to a mental picture of some destructive or painful evil in the future”
“They have exalted notions, because they have not yet been humbled by life or learnt its necessary limitations”
“The body is in its prime from thirty to five-and-thirty; the mind about forty-nine”
“Style to be good must be clear”
“it is from metaphor that we can best get hold of something fresh”
“A speech has two parts. You must state your case, and you must prove it”
Medical Lens
The Rhetoric is not a medical work, but medicine is Aristotle's favourite comparison for an art that works with probabilities and individual cases, and his own father was a physician. The treatise uses fever as its example of an infallible sign in diagnostic reasoning, cites Herodicus's regimen as health not worth envying, and defines emotions such as anger and fear as pains bound up with judgments and mental images. Book II's emotions and ages of life are a frequently cited early source in the history of the psychology of emotion and of cognitive accounts of feeling; reading them as clinical psychology would be an anachronism.
- Book I, Ch. 1
Rhetoric is compared with medicine, which aims to bring a patient as near health as possible and can treat well even those who will never be sound.
- Book I, Ch. 2
Medicine theorizes about classes of patients rather than about Socrates or Callias individually; later, fever is the example of an infallible sign of illness, while fast breathing is a fallible one.
- Book I, Ch. 5
Bodily excellence is defined as health that allows free use of the body; Herodicus's anxious regimen is mentioned as 'health' no one would congratulate.
- Book II, Ch. 2-11
Definitions of anger, calm, fear, confidence, shame, pity, indignation and envy as pains or pleasures arising from how events and persons appear.
- Book II, Ch. 12-14
Character sketches of youth, old age and the prime of life, including the young's desires compared to sick people's fits of hunger and thirst and the cautious coldness of the elderly.