Moral Virtue
Virtue is not given by nature. It comes from habit — and the doctrine of the mean explains not what virtue is but how to find it.
Summary
Aristotle begins Book 2 by distinguishing two kinds of excellence: intellectual (produced by teaching, requiring experience and time) and moral (produced by habit — the Greek word for moral virtue, ēthikē, derives from the word for custom, ethos). Moral virtue does not arise by nature, since nothing that exists by nature can be changed by habit. We are equipped by nature only with the capacity to receive virtue, and this capacity is perfected by exercise — just as we get bodily senses not by using them first but are born with them and then exercise them.
From this comes the doctrine of the mean. Moral virtue is the median state between two vices: excess and deficiency. Courage stands between cowardice (too little fear-management) and rashness (too much confidence). Generosity stands between stinginess and prodigality. The mean is not the arithmetic midpoint; it is what is right in relation to the right person, at the right time, in the right way, for the right reason. Finding it requires experience and practical wisdom, not calculation. Aristotle adds that some actions simply have no mean: there is no right amount of murder, adultery, or theft; the names already incorporate the condemnation.
Book 2 concludes by emphasizing pleasure and pain as the measure of character. The person of virtue takes appropriate pleasure in virtuous action and appropriate pain in vicious action. A person who acts justly but finds it painful has not yet formed the right habits; one who acts justly with positive pleasure, or at least without pain, has. This is why early habituation matters: the feelings that habit forms are what reason must work with for the rest of life. The goal is not suppression of feeling but alignment of feeling with what is genuinely worth responding to.
- Book 1Book 1 introduces the question and the method. All action aims at some good; the highest good is eudaimonia. The function argument...
- Book 2Book 2 introduces moral virtue as habit, distinguishes it from intellectual virtue, and gives the doctrine of the mean. Virtue is...
- Book 3Book 3 establishes the theory of voluntary action and moral responsibility, then applies it to the first two virtues: courage...
- Book 4Book 4 works through the moral virtues beyond courage and temperance: generosity, magnificence, magnanimity (the most contested)...
- Book 5Book 5 gives the treatise's full account of justice: general justice (complete virtue toward others) and particular justice...
- Book 6Book 6 introduces the intellectual virtues: scientific knowledge, technical skill, practical wisdom (phronesis), intuitive...
- Book 7Book 7 examines akrasia (weakness of will) — the phenomenon Socrates thought impossible. Aristotle argues it is real: the akratic...
- Book 8Book 8 distinguishes three kinds of friendship — utility, pleasure, and virtue — and argues that only the third is friendship in...
- Book 9Book 9 examines self-love, the dissolution of friendships, the question of how many genuine friends one can have, and the argument...
- Book 10Book 10 revisits pleasure — not a process but an activity, the unimpeded exercise of a faculty — and then answers the treatise's...