Rhetoric

At the center of the Clouds Aristophanes stages a debate between two personified figures, the Just Argument and the Unjust Argument, who represent between them two rival ways of teaching the art of speech. The Just Argument speaks for the old Athenian education, in which young men were trained in the songs of their fathers, in respect for their elders, in modesty, in simple food and cold baths, and in a rhetoric which was inseparable from the virtues it was used to express. The Unjust Argument speaks for the new education offered by the sophists and taken up, in Aristophanes' caricature, by the Thinkery of Socrates. This new rhetoric is a tool without a master, a set of techniques by which any position can be defended and any position attacked, a method in which the old distinction between what is true and what is merely plausible has been given up.

The debate is conducted in terms which leave the reader in no doubt as to what Aristophanes thinks. The Just Argument begins with the greater dignity and with the clear approval of the chorus, but the Unjust Argument, by a series of clever appeals, shows that even the gods have committed what the Just Argument condemns as shameful, and draws from this the conclusion that the old standards of decency were merely customs and not binding truths. The Just Argument retires in defeat. What the play shows, in placing this defeat upon the comic stage, is that the new rhetoric is dangerous precisely because it can win. It is not a bad rhetoric in the sense of a rhetoric which fails of its object. It is a rhetoric which succeeds, and which in succeeding overthrows the moral framework within which the older rhetoric had made sense.

The questions raised here belong to several of the neighboring ideas. The relation of rhetoric to the moral formation of the young belongs to the chapter on Education; the relation of rhetoric to philosophical argument belongs to the chapter on Philosophy, where Aristophanes treats the two as scarcely distinguishable; the general question of whether a technique of persuasion can be taught apart from a commitment to the truth belongs also to the chapters on Truth and on Opinion. What is peculiar to the idea of Rhetoric itself is the display of a case in which the teaching of speech has been deliberately separated from the teaching of virtue, and in which the result of the separation is that the arguments for the virtues can be defeated by arguments of a kind the virtuous speaker would not know how to use.

Plato takes up the same opposition in the Gorgias, where Socrates distinguishes the art of rhetoric as practiced by the sophists from the true art of persuasion which serves justice, and the Aristophanic framing of the problem is plainly in the background. Aristotle, in the Rhetoric, will try to answer the comic poet's charge by treating rhetoric as a morally neutral faculty whose goodness depends on the goodness of the speaker, and whose proper use is in the service of truth, even though its techniques can be turned against it. The comic poet's objection is not dissolved by these answers, and returns in every later period in which the teaching of eloquence has been felt to be in tension with the teaching of moral character.

Plato's Gorgias is the founding attack on rhetoric in Western thought. Socrates confronts three defenders of the orator's art and demolishes each in turn. Gorgias claims rhetoric is the greatest of human powers because it enables the speaker to persuade anyone about anything. Socrates replies that this is precisely the problem. A man who can persuade a crowd that he knows medicine, without knowing medicine, is not powerful; he is dangerous. Rhetoric as practiced in Athens is not a techne at all. It is a knack, like cookery, that flatters the appetites without understanding what is good for the body. True care of the soul requires knowledge, not persuasion.

The argument intensifies with Polus and Callicles. Polus admires the tyrant's power; Socrates argues that doing injustice is worse than suffering it, and that the orator who uses speech to escape punishment for wrongdoing harms himself most of all. Callicles pushes back with a frankly amoral position: nature rewards the strong, and conventional justice is a conspiracy of the weak. Socrates refuses every concession. The dialogue ends with a myth of judgment after death, where no rhetoric can deceive the judges of the soul. Plato wants his reader to feel the full weight of the claim: persuasion without knowledge of justice is not a neutral skill. It is a corruption of the soul's highest faculty.

Yet the Phaedrus offers a different picture. There Socrates sketches the possibility of a "true rhetoric," one grounded in knowledge of the soul and its different types, capable of adapting its speech to its audience not to deceive but to lead toward truth. This true rhetoric would require the orator to be a philosopher first, someone who knows what justice is before attempting to persuade others of it. Plato never claims such a rhetoric actually exists in practice. He merely argues that if rhetoric is to be an art rather than a knack, it must be rebuilt on philosophical foundations.

Plato's dual treatment of rhetoric, severe condemnation in the Gorgias and conditional rehabilitation in the Phaedrus, sets the terms for everything that follows. Aristotle will accept the challenge of building rhetoric into a genuine discipline. Aquinas will apply Plato's insistence on the speaker's moral character to the Christian preacher. Every later thinker must answer the question Plato poses: can persuasion serve truth, or does it inevitably corrupt it?

Aristotle's Rhetoric is the most systematic treatise on persuasion ever written, and it begins with a decisive break from Plato. Rhetoric is not flattery; it is "the counterpart of dialectic." Just as dialectic tests arguments through question and answer, rhetoric presents arguments to a general audience on matters that do not admit of formal demonstration. Political questions, legal disputes, and ceremonial occasions all require speech that is persuasive without being mathematically certain. Aristotle does not apologize for this. He observes that in a world where practical decisions must be made by assemblies and juries, the ability to present a case effectively is not a luxury; it is a civic necessity.

Aristotle identifies three modes of persuasion: ethos (the character of the speaker), pathos (the emotional state of the audience), and logos (the argument itself). This tripartite scheme is his greatest contribution to the tradition. Ethos is not a matter of the speaker's prior reputation; it is the impression of good sense, good character, and goodwill that the speech itself creates. Pathos is not mere manipulation; Aristotle devotes much of Book II to a careful psychology of the emotions, analyzing anger, pity, fear, and shame as responses that can be rationally assessed. Logos works through enthymemes (rhetorical syllogisms) and examples, the rhetorical equivalents of deduction and induction.

Book III treats style and arrangement, the "how" rather than the "what" of speech. Aristotle insists on clarity above all: "the merit of diction is to be clear without being mean." Metaphor is the most important figure because it instructs while pleasing, combining the familiar with the unfamiliar. But Aristotle warns against excessive ornamentation. Style that calls attention to itself distracts from the argument; the best style is the one the audience does not notice. This is a rhetorical theory that disciplines rhetoric, that treats persuasion as a craft answerable to standards of truth and appropriateness rather than a free exercise of power.

Aristotle's framework survives precisely because it answers Plato's challenge from within: by grounding persuasion in the audience's genuine emotions and real arguments, rather than arbitrary feeling, it gives rhetoric a discipline without stripping it of power. The unresolved tension he leaves is whether ethos, pathos, and logos can always be disentangled — whether a speaker skilled enough to manufacture the impression of good character has not already crossed back into the manipulation Plato condemned.

Aquinas inherits both Plato's suspicion and Aristotle's system, and he resolves the tension by embedding rhetoric within the life of the Church. In the Summa Theologica, he treats the "grace of speech" (gratia sermonis) as a gift of the Holy Spirit ordered toward the instruction of the faithful. Preaching is not mere oratory; it is a spiritual act. But it is also, necessarily, a rhetorical act. The preacher must adapt his speech to his audience, choose images that illuminate doctrine, and move the will as well as the intellect. Aquinas sees no contradiction here. Grace works through natural capacities, and rhetoric is a natural capacity that can be sanctified.

Aquinas follows Aristotle in treating the speaker's character as a mode of persuasion, but he gives it a theological grounding that Aristotle could not have imagined. The preacher's holiness is not just a rhetorical advantage; it is a condition of effective ministry. A preacher who teaches truth but lives wickedly undermines his own message, because the audience rightly judges that a man who does not practice what he preaches does not truly believe it. Aquinas cites Gregory the Great: the preacher's life is the first sermon. This is ethos elevated from a persuasive technique to a moral and spiritual requirement.

Aquinas also addresses the question of whether rhetorical art is compatible with the simplicity of the Gospel. Some medieval thinkers distrusted eloquence on the grounds that Scripture was its own best advocate and needed no ornamentation. Aquinas disagrees. The truths of faith are addressed to all people, including those who cannot follow abstract argument. The preacher who uses vivid examples, parables, and appeals to the emotions is not compromising the Gospel; he is making it accessible. Christ himself taught in parables. The art of preaching, properly understood, is an act of charity: it meets the listener where he is and leads him where he needs to go.

Aquinas's treatment of sacred rhetoric became the standard framework for homiletics in the Catholic tradition. His synthesis of Aristotelian technique with Christian moral seriousness offers a middle path between Plato's condemnation and the sophist's amoralism. Hobbes will break from this tradition sharply, treating rhetoric as a source of civil confusion rather than spiritual illumination.

The Shakespearean treatment of rhetoric is given in one scene above all others, the funeral oration of Mark Antony in the third act of Julius Caesar, which for centuries has stood in the English-speaking tradition as the standing instance of the power of public speech. Brutus has spoken first, in plain prose, and has offered the assembled citizens a justification of the assassination which they have accepted. Antony then mounts the rostrum, having asked leave to speak only in praise of the dead, and in the space of a long oration turns the same citizens against the conspirators. He produces the body and the will, he appeals to pity, he repeats the phrase "honorable men" until it has been emptied of the sense Brutus had given it, and he withdraws the assertion of any intention to rouse them until the assertion has become its opposite. The scene is a showing of what rhetoric, at the height of its power, can do when it has understood its audience.

The analysis implicit in the scene recalls the philosophical treatments of rhetoric from Plato and Aristotle. Plato in the Gorgias had distinguished the rhetoric which serves the truth from the rhetoric which serves the speaker's end and had warned that the second is the more common case; Aristotle in the Rhetoric had given a technical account of the means by which the passions of an audience could be moved and had allowed that the rhetorical art was legitimate so long as it served the ends of justice. Shakespeare's Antony is a case that fits neither schema neatly. He is serving an end which, within the world of the play, the reader is not required to judge either as wholly just or as wholly criminal, and he is serving it by means which are at once deceptive in their presentation of themselves and precise in their handling of the passions they mean to excite. The play does not offer a judgment on whether Antony's rhetoric is to be condemned. It shows only that such a rhetoric is possible, and that the state which does not understand it stands at the mercy of the first man who does.

The broader rhetorical concerns of the plays are not confined to this scene. The battlefield speech of Henry before Agincourt, the self-presentations of Richard III, and the speech of Coriolanus standing on his wounds in the forum are each treatments of the problem of how a man ought to speak to those whose support he requires. The philosophical questions raised belong to the treatments of Language, of Opinion, and of Democracy, and are discussed under those heads. What Shakespeare contributes to the idea of Rhetoric is the showing of the art in its full operation, in scenes which have remained for the whole later tradition the cases against which the philosophical treatments must be measured.

Hobbes, who held that the passions of the multitude are more easily moved by eloquence than governed by reason, drew from the Shakespearean showings the lesson that the sovereign must have the power to suppress the kind of speech Antony delivers. Locke, who wrote of rhetoric with scepticism in the Essay, nonetheless permits it a place when it is subordinate to plain discourse, a position the Antony scene is in some sense designed to test. The later treatments in the Federalist and in Mill take up the same questions under the conditions of representative government, where the power of speech over the multitude is no longer to be suppressed but must be trusted to the judgment of those who hear it.

Hobbes had lived through the English Civil War, and he blamed rhetoric for much of the bloodshed. In Leviathan, he argues that metaphorical speech is the enemy of civil peace because it substitutes emotional association for clear meaning. "Metaphors, and senseless and ambiguous words, are like ignes fatui; and reasoning upon them is wandering amongst innumerable absurdities." When preachers and parliamentarians use figurative language to inflame the passions of the people, the result is not enlightenment but faction, sedition, and war. Hobbes wants to replace rhetoric with science, eloquence with exact definition.

His account of language in Chapter 4 of Leviathan treats words as computational tokens. The purpose of speech is to transfer mental discourse into verbal discourse, so that chains of reasoning can be checked and communicated. Names must be precisely defined; reasoning must proceed by adding and subtracting terms according to fixed rules. When words are used loosely, as they inevitably are in oratory, the reasoning goes astray and the Commonwealth suffers. Hobbes does not deny that rhetoric is effective; he denies that its effectiveness has anything to do with truth. The orator's power comes from exploiting the passions, and the passions, left unchecked, tend toward violence.

This is a more radical critique than Plato's, because Hobbes does not leave open the possibility of a "true rhetoric" grounded in knowledge. For Plato, the philosopher-king might use speech to lead citizens toward the good. For Hobbes, the sovereign establishes peace not through persuasion but through the threat of punishment and the clarity of law. Good government does not need good speeches; it needs clear rules, consistently enforced. The entire tradition of civic eloquence, from Aristotle through Cicero to the Renaissance humanists, is in Hobbes's view a collection of beautiful errors that cost real lives.

Hobbes's hostility to rhetoric influenced the empiricist tradition profoundly. Locke will extend the attack to figurative language in general, treating it as an obstacle to the pursuit of knowledge. Hume will complicate the picture by taking sentiment seriously as a source of motivation while sharing Hobbes's skepticism about oratory's pretensions to truth.

Locke's attack on rhetoric in Book III of the Essay Concerning Human Understanding is one of the harshest in the tradition. He devotes an entire chapter to "The Abuse of Words," and figurative language occupies a central place in his catalogue of abuses. "All the artificial and figurative application of words eloquence hath invented, are for nothing else but to insinuate wrong ideas, move the passions, and thereby mislead the judgment." Rhetoric does not clarify; it obscures. It does not inform; it seduces. Locke writes as a philosopher who believes that clear and distinct ideas, communicated through precisely defined terms, are the only pathway to knowledge.

Locke distinguishes between wit and judgment. Wit assembles ideas that resemble each other in surprising ways; judgment separates ideas that differ despite superficial similarity. Metaphor belongs to wit, not judgment. A well-turned phrase may please the ear and stir the imagination, but it tells you nothing about how the world actually works. Locke does not deny that figurative speech has its place in conversation and entertainment. He denies that it has any place in the pursuit of truth. When rhetoric enters philosophy, science, or law, it corrupts the enterprise from within, substituting agreeable impressions for accurate ones.

The political implications of Locke's position are significant. He is writing in the aftermath of the same civil conflicts that shaped Hobbes, and he shares the conviction that confused language leads to confused politics. But where Hobbes placed his faith in the sovereign's power to enforce definitions, Locke places his in the individual's capacity to discipline his own thinking. The remedy for rhetorical abuse is not censorship but intellectual self-correction: careful attention to the meaning of one's terms, willingness to define them precisely, and refusal to be moved by eloquence when evidence is lacking. This is a deeply Protestant epistemology, one that trusts the individual conscience to judge rightly when freed from external manipulation.

Locke's critique of rhetoric shaped the Enlightenment's self-understanding as an age of reason opposed to an age of authority and eloquence. Hume will accept much of Locke's framework while insisting that sentiment plays a legitimate role in moral and aesthetic judgment. Kant will go further, arguing that oratory as the art of deceiving by beautiful illusion deserves no respect. Both are working within the space Locke opened.

Hume complicates the Enlightenment case against rhetoric by taking the passions seriously. His famous dictum that "reason is, and ought only to be the slave of the passions" does not mean that human beings are irrational. It means that reason alone never motivates action. We reason in order to discover the means to ends that the passions set. If this is true, then rhetoric's appeal to emotion is not a corruption of rationality; it is an acknowledgment of how human motivation actually works. The orator who moves his audience to action by engaging their feelings is working with, not against, human nature.

In Of Eloquence, Hume laments the decline of oratory in modern times. The ancients, particularly Demosthenes and Cicero, achieved effects that modern speakers cannot match, because modern taste has become timid and polite. Hume attributes this partly to the rise of commerce and partly to the dominance of print over speech. When political debate moves from the assembly to the pamphlet, the direct emotional power of the spoken word diminishes. Hume does not celebrate this development. He treats the loss of great eloquence as a genuine cultural impoverishment, even as he recognizes that modern civility has its advantages.

Yet Hume is no champion of unchecked persuasion. His essay Of the Standard of Taste establishes that aesthetic and moral judgments, while grounded in sentiment, are not arbitrary. The "true judge" is a person of wide experience, calm temperament, and refined perception who can distinguish genuine feeling from manufactured excitement. This implies a standard for rhetoric as well: good rhetoric engages real sentiments honestly; bad rhetoric fabricates feelings through manipulation. Hume does not draw this conclusion explicitly, but his entire philosophical project, reconciling the authority of feeling with the discipline of critical judgment, points toward a rhetoric that is passionate but not dishonest.

Hume's rehabilitation of sentiment will influence the tradition in two directions. Kant will accept that aesthetic judgment involves feeling but insist on a transcendental ground for its universality. The authors of The Federalist will practice a rhetoric that addresses both reason and passion, precisely the kind of honest eloquence Hume's philosophy makes room for.

Kant's treatment of rhetoric in the Critique of Judgment is brief but severe. In §53, where he ranks the fine arts, he places oratory (Beredsamkeit) below poetry and expresses open contempt for it. "The art of oratory, so far as this is taken to mean the art of persuasion, i.e. the art of deluding by means of a beautiful semblance, and not merely excellence of speech, is a dialectic which borrows from poetry only so much as is necessary to win over men's minds to the advantage of the speaker before they can judge for themselves." The orator treats his audience as means, not ends. He bypasses their rational autonomy to produce assent that has not been earned through argument.

This is Plato's critique updated for the age of moral autonomy. Plato worried that rhetoric corrupts the soul because the orator does not know what is just. Kant worries that rhetoric corrupts the relationship between persons because it treats the listener as an object to be moved rather than a subject to be convinced. The moral law demands that we treat every rational being as an end in himself, never merely as a means. Rhetoric, insofar as it manipulates rather than persuades, violates this demand at its root. Kant does not deny that rhetoric is effective; he denies that effectiveness alone confers legitimacy.

Kant makes an exception for what he calls "mere excellence of speech," a clarity and force of expression that serves the honest communication of thought. This is rhetoric in the minimal sense: good writing, precise diction, logical structure. Kant has no objection to speaking well, only to speaking well in order to deceive. The distinction maps onto his broader moral philosophy. An action done from duty is moral; the same action done from inclination or self-interest may produce the same result but lacks moral worth. Similarly, a speech that persuades through the force of its reasoning respects the listener's autonomy; the same speech tricked out with emotional appeals and beautiful illusions does not.

Kant's position is the most principled rejection of rhetoric in the modern tradition. Mill will partially accept this framework while arguing that free and open debate, including passionate speech, is the condition under which truth can emerge. The tension between Kant's moral rigorism and the practical needs of democratic deliberation remains unresolved.

The Federalist Papers are the greatest example of political rhetoric in the American tradition, and they succeed precisely because their authors understood what rhetoric can and cannot do. Hamilton opens Federalist No. 1 with a frank acknowledgment that the debate over ratification will be distorted by passion, interest, and ambition on both sides. He does not pretend to be above these forces; he asks only that his readers judge the arguments on their merits. This is Aristotelian ethos at its most effective: the speaker establishes credibility by admitting the difficulty of the enterprise rather than claiming a purity he cannot possess.

Madison's Federalist No. 10 demonstrates rhetoric in the service of rigorous political analysis. The problem of faction, he argues, cannot be solved by removing its causes, because the causes are rooted in human nature: differences of opinion, differences of interest, the unequal distribution of property. The remedy must work through effects, not causes. A large republic, with many competing factions, will prevent any single faction from dominating the whole. This argument is presented with a clarity and force that makes it seem inevitable, which is itself a rhetorical achievement. Madison does not manipulate his reader; he leads him through a chain of reasoning so tightly constructed that the conclusion appears to follow necessarily from the premises.

Federalist No. 51 makes the case for institutional design as the safeguard of liberty. "If men were angels, no government would be necessary." The sentence works because it is compressed, witty, and true. Hamilton and Madison throughout the Federalist deploy a rhetoric that respects the reader's intelligence while engaging his practical concerns. They appeal to interest as well as principle, to fear of tyranny as well as love of liberty. They do not pretend that constitutional government can be sustained by virtue alone; they design institutions that channel self-interest toward the public good. This is a rhetoric that takes human nature as it is, not as philosophers wish it to be.

The Federalist influenced democratic rhetoric on both sides of the Atlantic. Tocqueville will study American political speech as a symptom of democratic culture, noting both its strengths and its characteristic weaknesses. Mill will argue that the kind of open, honest debate exemplified by the ratification controversy is the condition under which truth can emerge in a free society.

Mill's On Liberty makes the most comprehensive case in the tradition for why rhetoric must be free even when it is wrong. Chapter 2, "Of the Liberty of Thought and Discussion," argues that silencing an opinion is a harm to humanity whether the opinion is true, false, or partly both. If the opinion is true, suppression deprives the world of an opportunity to exchange error for truth. If it is false, suppression deprives holders of the true opinion of the chance to test and vivify their belief through collision with error. If it is partly true, suppression prevents the correction of the prevailing view. In every case, free debate produces better outcomes than censorship.

Mill's argument transforms the question of rhetoric from "Is persuasion honest?" to "Are the conditions of debate free?" He shares Kant's dislike of manipulation, but he does not think the remedy is to restrict speech. The remedy is to ensure that all speech can be answered. In a regime of open discussion, bad arguments are exposed by better arguments, emotional appeals are checked by counter-appeals, and the truth, insofar as it can be reached, emerges from the contest. Mill does not guarantee that truth will always win; he argues that it has a better chance in an open forum than in a closed one. This is a pragmatic defense of rhetoric rather than a moral one: free speech is valuable not because all speech is good but because suppression is worse.

Mill also diagnoses a danger that Kant and Plato did not foresee: the tyranny of received opinion. Even in a society without formal censorship, social pressure can silence dissent as effectively as any censor. When everyone agrees, opinions become "dead dogma," held out of habit rather than conviction. Mill argues that this deadness is itself a form of intellectual corruption. The person who holds a true opinion but has never had to defend it against serious challenge does not really understand it. He cannot state the grounds for it, cannot answer objections, cannot distinguish the essential from the incidental. Rhetoric, even bad rhetoric, performs the service of keeping ideas alive by forcing their holders to think.

Mill's defense of free debate became the theoretical foundation of modern free-speech jurisprudence. Tocqueville, writing about America from the outside, will identify the very danger Mill fears: a democratic culture in which social conformity silences dissent more effectively than any law could. Together, Mill and Tocqueville frame the modern problem of rhetoric in a democracy.

Tocqueville observes something that none of the earlier theorists of rhetoric anticipated: democracy changes not just who speaks but how everyone speaks. In aristocratic societies, a small educated class cultivates a refined, precise, and allusive style. Words have stable meanings because they circulate within a closed community that shares common references. In democratic societies, where everyone reads and writes and no authority fixes usage, language becomes vague, abstract, and inflated. Democratic speakers prefer general terms to specific ones, because general terms flatter the audience's sense that everyone is equal and no one's experience is more authoritative than another's.

This observation is not a simple complaint about declining standards. Tocqueville connects the character of democratic rhetoric to the structure of democratic society. Where citizens are roughly equal, no speaker can claim authority on the basis of birth or station. He must appeal to sentiments that all share, and the easiest way to do this is to speak in abstractions that no one can disagree with because no one knows exactly what they mean. Tocqueville notes that American political language is full of grand phrases about liberty, progress, and the people that sound impressive but commit the speaker to nothing specific. This is not dishonesty, exactly; it is the natural rhetoric of a society in which every claim to superiority is suspect.

Tocqueville also identifies a paradox in democratic free speech. Democracy multiplies the number of speakers and protects their right to speak, but it does not follow that democratic speech is free in the deepest sense. The "tyranny of the majority" operates through social pressure, not law. A dissenter in a democracy is not imprisoned; he is ignored, ostracized, or ridiculed until he conforms. This is the danger Mill will later theorize: a society in which everyone is free to speak but no one dares to disagree. Tocqueville saw it first, not as a theoretical possibility but as an observable fact of American life in the 1830s.

Tocqueville brings the conversation about rhetoric to a distinctly modern conclusion. The problem is no longer whether rhetoric can serve truth, as it was for Plato, or whether persuasion respects autonomy, as it was for Kant. The problem is whether democratic culture produces the conditions under which serious speech is possible at all. His diagnosis remains uncomfortably relevant.