Virtues (Aristotelian)

In the AI Story

Aristotle's Nicomachean Ethics distinguishes three kinds of knowledge: episteme (scientific knowledge of necessary truths), techne (technical skill in making artifacts), and phronesis (practical wisdom in action). The virtues are developed in and through the exercise of phronesis, and phronesis is developed through sustained practice in situations that demand its exercise. A physician becomes courageous by repeatedly facing decisions that require courage; she does not become courageous by memorizing rules about when to be courageous.

This has a structural consequence for AI. The machine can perform techne — it can produce artifacts according to specified or inferred rules. It cannot exercise phronesis, because phronesis requires the kind of situated judgment that depends on having a history, a community, a stake in the outcome, and a narrative identity within which the action makes moral sense. The machine has none of these. It operates in the domain of capabilities, where the relevant evaluative criteria are efficiency, accuracy, and consistency. The practitioner operates in the domain of virtues, where the relevant criteria are courage, justice, honesty, and practical wisdom.

The Aristotelian account of virtue is not compatible with the picture of the self as a bundle of skills that can be acquired and discarded on demand. The virtues are cultivated through habituation — the repeated performance of virtuous actions until the disposition becomes second nature. There are no shortcuts. The engineer who develops the virtue of architectural courage — the willingness to make structural decisions under genuine uncertainty — develops it through years of making such decisions, being wrong sometimes, being right sometimes, and learning from both. A tool that performs those decisions on her behalf does not cultivate the virtue; it prevents its cultivation.

This is where Shannon Vallor's concept of moral deskilling becomes important. If the conditions under which the virtues specific to a practice are cultivated are eroded by technologies that produce the practice's external goods without requiring the exercise of those virtues, the virtues atrophy — not merely as skills but as dispositions of character. The physician who relies on AI diagnosis may maintain her clinical efficiency while losing the diagnostic intuition that constitutes her distinctive excellence. The deskilling is moral, not merely technical, because the lost disposition is not merely a skill but a virtue.

Origin

Aristotle's account of virtue in the Nicomachean Ethics (c. 350 BCE) is the founding text, but the tradition was developed through Thomas Aquinas's synthesis with Christian theology in the Summa Theologiae and through centuries of commentary. MacIntyre recovered the tradition for contemporary moral philosophy in After Virtue (1981), arguing that the Enlightenment project of grounding morality in tradition-independent rational principles had failed and that a return to the Aristotelian account of virtues was necessary.

Key Ideas

Virtues vs. capabilities. A capability is the power to perform a task; a virtue is a disposition of character developed through the sustained exercise of that capability in situations demanding judgment.

Habituation. Virtues are cultivated through repeated performance, not through instruction alone — which is why shortcuts that bypass the performance also bypass the cultivation.

Practical wisdom (phronesis). The master virtue that governs the exercise of all other virtues and cannot be reduced to rule-following.

Constitutive of flourishing. Virtues are not merely instrumental to the good life; they partly constitute it, which is why their loss is a moral loss and not merely a functional one.

Practice-embedded. The specific virtues a person develops depend on the specific practices in which she participates; there is no single universal template.

Debates & Critiques

The tension between the Aristotelian account of virtues as practice-embedded and the modern demand for universal, context-independent ethical principles is unresolved in contemporary moral philosophy. Principlist frameworks for AI ethics (fairness, accountability, transparency) operate at the level of universal principles; virtue ethics insists that principles acquire their content only from the traditions within which they are formulated.