Virtue and Vice

Homer sets the earliest template for Greek virtue. Aretē, the word usually translated "virtue," originally means excellence of any kind: the sharpness of a blade, the speed of a horse, the strength of a warrior. In Homer, human aretē is overwhelmingly martial: courage in battle, skill with weapons, endurance before danger, the capacity to protect one's companions and shame one's enemies.

But Homeric virtue is not mere ferocity. Achilles, Hector, and Odysseus display varieties of excellence: Achilles' volcanic wrath and terrible honor, Hector's devotion to family and city, Odysseus's cunning and patient craft. Alongside prowess sit hospitality to strangers, loyalty to kin, reverence toward the gods, and the measured speech that marks the noble. The hero is the one whose gifts and deeds together entitle him to honor (timē) and everlasting glory (kleos).

Homer's virtue is also shadowed by its losses. The heroic code demands things (vengeance, risk, the single-minded pursuit of glory) that break hearts and shatter cities. Achilles' choice between long anonymity and short-lived renown captures the trade-off. Virtue, in Homer, is what makes a human life shine; it is also what so often breaks it.

Homer's heroic virtues establish the raw material the Greek philosophers will refine. Plato and Aristotle will critique and transform them; Machiavelli will revive them; every later thinker writes against the backdrop of the warrior's aretē.

Plato breaks with Homeric virtue by insisting that excellence is not primarily martial but psychic. The virtuous person is the one whose soul is rightly ordered. In the Republic, he identifies four cardinal virtues, each tied to a part of the soul: wisdom (the excellence of reason), courage (the excellence of spirit), temperance (the excellence of appetite when rightly ordered), and justice (the harmony of all three parts doing their proper work).

This reframing strips virtue of its aristocratic accidents. The cowardly warrior and the intemperate ruler are no longer virtuous despite their defects, because virtue is the condition of the soul as a whole, not the possession of any single excellence. A person may be brave in battle and still be vicious; only the ordered soul is genuinely virtuous.

In the Meno, Plato raises the harder question: can virtue be taught? If virtue is knowledge, as Socrates argues, then in principle it should be teachable. Yet experience suggests otherwise: the sons of virtuous men are often vicious. Plato leaves the question open but points toward his characteristic answer: virtue requires the long, painful turning of the whole soul toward the Good, a conversion that ordinary teaching alone cannot accomplish.

Plato makes virtue philosophical. But the claim that virtue is knowledge creates a problem Aristotle will press relentlessly: if virtue is knowledge, how do we explain the person who knows what is right and still does wrong? Aristotle's theory of habituation is, in large part, a response to Plato's intellectualism — an argument that character must be formed through practice, not merely through understanding.

Aristotle gives virtue its canonical classical form. Virtue is neither a feeling nor mere knowledge but a hexis: a stable disposition of character, acquired through habituation, that inclines us to act well. "Virtues are not in us by nature, nor are they against nature; but we are by nature receptive of them, and they are perfected in us by habit."

Every virtue is a mean between two vices. Courage lies between cowardice and rashness; generosity between stinginess and prodigality; friendliness between obsequiousness and surliness. The mean is not an arithmetic middle but the right response to each situation, relative to us, to the circumstances, to what reason prescribes. Finding it requires phronēsis (practical wisdom), the master-virtue that enables us to see what each case requires.

Aristotle distinguishes moral virtues (of character, shaped by habit) from intellectual virtues (of thought, shaped by teaching). Both are necessary for human flourishing. The virtuous person is not merely one who does the right thing but one who does it in the right way, for the right reasons, with the right feelings. Virtue is second nature, acquired slowly, stable across circumstance, the deep settled condition of a well-formed character.

Aristotle produces the most influential account of virtue in Western philosophy. But his account depends on a functioning political community that shapes citizens from youth — a condition Augustine will challenge: fallen human nature cannot reliably form virtue through habituation alone, because the very appetites that habituation is supposed to tame are already disordered at their root.

Cicero's treatment of virtue and vice in the On Duties and the Tusculan Disputations takes over the Stoic doctrine that the cardinal virtues are four, and that each may be specified as a determinate excellence of the rational soul. Wisdom (prudentia) is the knowledge of what is and is not, together with the knowledge of what follows from each. Justice is the disposition to render to each his own and to keep faith. Fortitude is the firmness of mind which endures what is to be endured and undertakes what is to be undertaken for the sake of the honorable. Temperance is the restraint which keeps the appetites under the rule of reason. Each of these, Cicero argues, is a genuine perfection of the soul, and together they constitute the whole of virtue.

Against this account he sets out what he takes to be the characteristic error of the age: the supposition that a virtue may be sacrificed for an advantage, or that a vice may be embraced for the sake of a gain. The third book of the On Duties is given over to the analysis of the cases in which this temptation arises. Cicero's argument is that no advantage bought by vice is in the end an advantage, because the loss of character which vice brings with it is itself a loss greater than anything that can be set against it. The man who has enriched himself by treachery has bought his wealth at the price of his standing as a human being; the statesman who has preserved his position by betrayal has preserved something of less worth than what he has surrendered. Whether this is a doctrine the facts of moral experience uniformly support, or whether Cicero is generalizing from the narrower case of the public man whose reputation is his capital, is a question the later tradition will turn to repeatedly.

The bearing of this treatment on the idea of Duty is considered under that head, as is the relation of virtue to the useful and the honorable. The connection between the cardinal virtues and the theological virtues, which is not in Cicero, belongs to the later tradition and is discussed under Religion and Theology. What belongs properly to the idea of Virtue and Vice is the fourfold scheme, which Cicero takes over from the Stoics and passes on through the Latin tradition.

Augustine will quarrel with the Ciceronian conception on the ground that the pagan virtues, however genuine they appear, are ordered to the earthly city and fall short when measured by the love of God. Aquinas will recover the Ciceronian scheme and place the cardinal virtues alongside the theological, arguing that the former are true virtues in their own order even when they are not yet perfected by grace. The four-fold scheme, as the common property of the tradition, is in great part the gift of the Roman statesman who set it out with an orator's clarity and a Stoic's conviction.

Epictetus narrows virtue to the discipline of judgment. For the Stoics, every human action flows from how we interpret what happens to us. Virtue, therefore, is the "right use of impressions": assenting only to what is true, desiring only what is up to us, rejecting false judgments about what is worth pursuing and avoiding. Vice is the opposite: the undisciplined assent to false impressions, the misplacement of our desires on externals.

The cardinal Stoic virtues are wisdom, courage, temperance, and justice (the same as Plato's) but they take on a distinctively inward coloration. Courage is the steadiness of the will in the face of fear; temperance is the quieting of desire; wisdom is the clear sight that distinguishes what is in our power from what is not; justice is treating other rational beings as sharers in the common reason of the cosmos. Every virtue tracks back to the disciplined hegemonikon, the inner ruling faculty.

For Epictetus, this means virtue is always within reach, because what is up to us is precisely our own judgments. External conditions cannot make us virtuous or vicious; only our response to them can. This is the ethics of the inner citadel: virtue as unshakable integrity, held in place by the rational discipline of a will trained to consent only to what aligns with nature.

Epictetus gives Stoic ethics its most accessible form. But his confidence that the will can always govern itself through rational discipline is precisely what Augustine will dispute: the will is divided against itself, and no technique of self-command can heal the split — only grace can reorder what sin has disordered.

Augustine reframes virtue around love. "Virtue is nothing else than perfect love of God"; every virtue is a mode of well-ordered love, and vice is love disordered or misdirected. The four cardinal virtues of the classical tradition are re-described in this light: temperance is love preserving itself uncorrupted, courage is love bearing hardship, justice is love serving God alone, prudence is love discerning rightly what aids and what hinders it.

This is a decisive break with pagan ethics. For Plato and Aristotle, virtue was the perfection of the soul's own natural powers. For Augustine, the natural powers are real but fallen, and their perfection depends on grace. The genuinely virtuous person is not the Stoic sage confident in his own discipline but the lover of God whose heart has been reordered toward its true end. Without this reordering, even the pagan virtues become "splendid vices": disciplined behaviors serving disordered loves.

Augustine adds three "theological virtues" to the four classical ones: faith, hope, and charity (love). These are infused, not acquired by habit: gifts that orient the soul toward God. Faith believes what it cannot see; hope trusts what it has not yet received; charity loves what is ultimately worth loving. Together they complete the Christian account of the virtuous life.

Augustine christianizes virtue. Aquinas will inherit his framework but try to preserve more of Aristotle within it: if grace perfects nature rather than replacing it, the classical virtues remain genuinely good, and the pagan who achieves courage or justice has not merely produced a splendid vice. The tension between Augustine's severity and this more generous reading of natural virtue defines the central dispute of medieval ethics.

Aquinas synthesizes Aristotle's philosophy of virtue with Augustine's theology of grace. He preserves the Aristotelian definition (virtue is a stable habit (habitus) disposing one to act well) and the doctrine of the four cardinal virtues. But he distinguishes the natural virtues, acquired by habituation in the ordinary human way, from the infused virtues, given directly by God to orient the soul toward its supernatural end.

The cardinal virtues (prudence, justice, fortitude, temperance) regulate human life in relation to its natural ends. They can be attained (to some degree) by pagan as well as Christian effort. The theological virtues (faith, hope, charity) have God himself as their object and are beyond the reach of mere human cultivation. They are poured into the soul by divine grace, and they elevate human action toward a goal that exceeds nature.

Aquinas's synthesis resolves a long medieval tension. Christians had inherited two strands: the classical pursuit of excellence through habituation, and the Pauline insistence that every good gift comes from above. Aquinas reconciles them. Grace perfects nature; the theological virtues complete but do not replace the natural virtues; the Christian life is the perfection of what Aristotelian ethics had glimpsed.

Aquinas gives Catholic moral theology its classical form. Kant will later break with the entire tradition — Aristotelian and Thomistic alike — by arguing that a virtue shaped by inclination or training cannot have moral worth; only the will acting from duty, against the grain of natural character, deserves moral credit. This inversion of the classical ideal makes Kant's ethics genuinely discontinuous with everything from Homer through Aquinas.

Machiavelli severs virtue from Christian ethics and returns something older, and starker, to its place. Virtù, in his usage, is not the Christian catalogue of meek excellences; it is the effective political capacity of princes and peoples: energy, courage, resourcefulness, decisiveness, the ability to act strategically under pressure. It overlaps at points with classical aretē but is stripped of its moral frame.

Machiavelli confronts the tradition directly. "Many have imagined republics and principalities which have never been seen or known to exist in reality; for how we live is so far distant from how we ought to live." A prince who always practices the Christian virtues (humility, mercy, truthfulness) will be destroyed by men who do not. The ruler must therefore learn "how not to be good," practicing the traditional virtues when circumstances permit and abandoning them when necessity demands.

This does not endorse pure wickedness. Machiavelli admires Roman republican virtù: civic courage, patriotism, the disciplined willingness to risk self for the common good. He distinguishes the temporary cruelty of the effective founder from the persistent cruelty of the tyrant. But he refuses to pretend that moral goodness and political success go together. Virtue, in his framework, must answer to outcomes, and the political world has its own harsh criteria.

Machiavelli disrupts the tradition by prying virtue apart from morality. His virtù shapes Renaissance republicanism, reemerges in modern realism, and forces every subsequent ethical theory to reckon with the gap between goodness and political effectiveness.

Hume naturalizes virtue. He rejects the attempt to ground virtue in reason alone, in divine command, or in a metaphysics of the soul. Virtues, he argues, are simply those qualities of character that an impartial observer, considering their effects, approves of, because they are pleasing or useful, either to the person who possesses them or to others.

This yields a fourfold classification. A virtue can be pleasing to its possessor (cheerfulness), useful to its possessor (industry), pleasing to others (wit), or useful to others (benevolence, justice). The single common feature is that virtues evoke sentiments of approval when we view them with detachment. Vice is the contrary: qualities that evoke disapprobation in an impartial observer.

Hume distinguishes natural virtues (benevolence, gratitude, parental affection: direct expressions of human sentiment) from artificial virtues (justice, promise-keeping, fidelity to government: virtues that arise from human conventions because they serve common interests). Both are genuine, but their origins differ. In either case, morality rests on sentiment, refined by reflection, stabilized by custom. It is human through and through.

Hume gives virtue ethics a sentimentalist foundation. His naturalistic account of moral sentiment, impartial spectator, and artificial virtue shapes Adam Smith's ethics, prefigures evolutionary moral psychology, and remains a major alternative to rationalist ethics.

Kant reclaims virtue against Hume's sentimentalism, but redefines it. Virtue is not a disposition of character grounded in sentiment or cultivated pleasure; it is the strength of the will in fulfilling duty against the pull of inclination. "Virtue is the moral strength of a man's will in fulfilling his duty." Where Aristotle defined virtue as a mean, Kant defines it as a power: the power of practical reason to govern sensible nature.

This makes virtue essentially combative. Human beings are not naturally virtuous; they have powerful inclinations that pull them away from the moral law. Virtue is what we display when we resist those inclinations and act for the sake of duty alone. The person who enjoys being kind and helps others without effort has not yet shown virtue; only when doing the right thing costs something, only when it is done from respect for the law, does genuine moral worth appear.

Kant distinguishes duties of right (enforceable, external) from duties of virtue (owed to oneself and others, enforceable only by conscience). The latter (cultivating one's natural perfection, caring for others' happiness, refusing to degrade oneself or others) form the content of Kantian virtue ethics. The good person is not merely the one who does not violate rights but the one who has adopted the right ends.

Kant gives virtue a deontological reconstruction. His strenuous, duty-centered account of moral character stands in sharp contrast to both Aristotelian habituation and Humean sentiment, and shapes modern ethics of autonomy and respect.

Mill weaves virtue into utilitarianism. Virtue, he argues, is not an end in itself but a disposition that reliably promotes happiness, the one ultimate good. We value traits like honesty, courage, benevolence, and self-command because persons who possess them contribute to human welfare and enjoy lives of higher quality.

Yet Mill grants that virtue can be desired for its own sake by those who have cultivated it. Just as money, originally valued for what it buys, can become prized in itself, virtue, originally pursued for the happiness it produces, can be integrated into a person's conception of happiness itself. "It becomes to the individual a good in itself without looking to any end beyond it." This is not a betrayal of utilitarianism but its psychological completion: the virtuous character experiences goodness as part of its own flourishing.

Mill also insists that genuine virtue must be chosen and formed, not merely inherited or imposed. Individuality and self-development are themselves near-virtues in his framework, because they are the conditions under which any character can be truly the agent's own. A person of virtue is one who, through cultivation and active choice, has come to desire and act in ways that reliably serve human well-being.

Mill fuses virtue ethics with consequentialism. His attempt to honor both the primacy of happiness and the genuine value of character shapes modern welfarist and eudaimonic traditions, and remains influential in contemporary debates about ethics and well-being.