Aristotle: We Become What We Repeatedly Do

Quote

"We become just by doing just actions, temperate by doing temperate actions, brave by doing brave actions."

— Aristotle, Nicomachean Ethics, II.1, 1103b

Historical Context

The passage comes from the opening chapter of Book II of the Nicomachean Ethics, where Aristotle transitions from the general account of happiness in Book I to the specific question of how virtue is acquired. The argument responds to a debate that ran through Greek philosophy: can virtue be taught? The Sophists claimed to teach it for a fee; Socrates explored the question in dialogues like the Protagoras and Meno; Plato developed an elaborate theory of moral education in the Republic. Aristotle's answer cuts across these positions: virtues of character are not taught in the way mathematics is taught, through lectures and demonstrations, but they are not innate either. They are acquired through habit — through the repeated performance of the actions that the virtues govern.

The distinction between intellectual and moral virtue is central to Aristotle's ethics, and it is introduced here. Intellectual virtues — wisdom, understanding, practical wisdom — are developed mainly through teaching. Moral virtues — justice, courage, temperance, generosity — are developed through habituation (ethismos), a process of training that shapes the passions and desires through practice. The Greek word for character (ethos) shares its root with the word for habit (ethos), and Aristotle plays on this etymology: character is built the same way habits are formed, through repetition.

Aristotle illustrates the point with a craftsman analogy. We become builders by building, harpists by playing the harp. Similarly, we become just by doing just things, temperate by acting temperately, brave by performing brave actions. The analogy is carefully chosen: it emphasizes that moral development, like skill acquisition, is a matter of practice, not theory. One does not become a builder by reading about architecture; one does not become just by memorizing rules. The formation of character requires engagement, repetition, and the gradual internalization of patterns of action that eventually become second nature.

Meaning

The passage asserts a principle that sounds simple but carries profound implications: character is the product of action. One does not first possess a virtue and then act virtuously; rather, by acting virtuously — or at least by performing the actions that virtue would prescribe — one gradually develops the disposition that constitutes the virtue. The order matters. The action comes first; the character follows. This means that moral development is not a matter of waiting until one feels ready or has achieved the right inner state. It is a matter of doing the right thing, repeatedly, until the doing shapes the being.

Aristotle is careful to distinguish between performing a virtuous action and acting virtuously in the full sense. A beginner can perform an action that is externally just — paying a debt, returning a borrowed item — without yet possessing the internal state of the just person. The fully virtuous action requires three conditions: the agent must know what they are doing, choose the action for its own sake, and act from a firm and unchanging disposition. The beginner meets none of these conditions fully; they perform the right action without yet being the right kind of person. Through repeated practice, however, the external action gradually shapes the internal disposition, until the agent acts justly not from external compulsion or calculation but from settled character.

This account addresses a puzzle that Plato explored in the Republic: if you need to be good to do good, but you need to do good to become good, how do you ever start? Aristotle's answer is that the beginner starts by performing actions that are externally right — actions that conform to what justice or temperance requires — without yet possessing the virtue. These actions are not fully virtuous, but they are the necessary first steps. Over time, through consistency and correction, the gap between external performance and internal disposition narrows, until the two coincide.

Philosophical Interpretation

Aristotle's account of habituation has shaped Western thinking about moral education for over two millennia, and its implications extend well beyond the classroom. The most immediate consequence is that moral development cannot be reduced to the acquisition of knowledge. Knowing what justice requires is not the same as being just, just as knowing the rules of music is not the same as being a musician. This separates Aristotle from the Socratic tradition, which tended to identify virtue with knowledge, and it anticipates a distinction that remains central to contemporary ethics: the difference between knowing the good and doing the good, between intellectual understanding and practical formation.

The account also implies that the conditions of moral development matter enormously. If character is built through practice, then the environment in which one practices — the family, the community, the laws and customs of the city — shapes the kind of person one becomes. Aristotle draws the political consequence explicitly: the lawgiver must arrange the community so that citizens are habituated to virtue through proper education and institutions. This is not a matter of indoctrination but of providing the right contexts for practice. A city that rewards injustice, or that provides no opportunities for the exercise of courage or generosity, will produce citizens who lack those virtues regardless of what they are taught.

The emphasis on habituation connects to Aristotle's broader claim that virtue is a mean between extremes. Finding the mean is not a matter of calculation but of perception — seeing what the situation requires and responding appropriately. This perceptual capacity is itself developed through practice. The person who has repeatedly encountered situations calling for courage develops an eye for what courage demands that the novice lacks. Practical wisdom (phronesis), the intellectual virtue that guides moral action, is inseparable from the moral virtues it directs: one cannot have practical wisdom without moral virtue, and one cannot have moral virtue without practical wisdom. They develop together, through the same process of habituated practice.

Alasdair MacIntyre, in After Virtue, argued that Aristotle's account of habituation presupposes a social context that modern liberal societies have largely lost. For Aristotle, the practices through which virtues are formed are embedded in shared communal activities — the life of the polis, the traditions of a particular community. When those communal structures dissolve, the practices that sustain virtue formation dissolve with them, and moral education becomes a matter of individual choice rather than shared formation. MacIntyre's critique does not challenge Aristotle's insight that virtue is built through practice; it challenges the possibility of sustaining that practice in a fragmented social world. The disagreement is not about whether habit matters but about whether the conditions for proper habituation still exist.

The passage's enduring force lies in its democratic ambition. Aristotle does not say that only the philosophically gifted can become virtuous. He says that anyone who performs the right actions repeatedly will develop the corresponding virtues. The barrier to moral excellence is not a lack of talent or intelligence but a failure of practice — a refusal or inability to do the work that character formation requires. This is at once encouraging and demanding: the path to virtue is open to all, but it asks for consistency, discipline, and the willingness to act well before one feels fully virtuous. The gap between knowing and doing, between aspiration and achievement, is closed not by insight alone but by the patient accumulation of right action.

Relations

This quote presents the foundational principle of Aristotle's Nicomachean Ethics, situated within the tradition of virtue ethics. It was revived by Alasdair MacIntyre's modern account of virtue as embedded in social practices. The quote speaks to the wisdom of virtue, discipline, and courage, and belongs to the collections on ancient wisdom and understanding yourself.

Sources

1. "Aristotle's Ethics." Stanford Encyclopedia of Philosophy. https://plato.stanford.edu/entries/aristotle-ethics/
2. Aristotle. Nicomachean Ethics. Translated by Terence Irwin. Indianapolis: Hackett, 1999. II.1, 1103b.
3. "Virtue Ethics." Stanford Encyclopedia of Philosophy. https://plato.stanford.edu/entries/ethics-virtue/