What is the good life? Not wealth, not pleasure, not honour — but eudaimonia: a life of excellent activity in accordance with virtue. Aristotle's Nicomachean Ethics is the founding text of Western moral philosophy, and it is startlingly practical. This is not a set of commandments but a manual for becoming the kind of person who makes good decisions. Twenty-four centuries later, its analysis of virtue, friendship, and human flourishing remains the starting point for anyone serious about how to live.
Start ReadingEvery action aims at some good. The highest good for humans is happiness — but what does that mean? Not money, which is merely useful. Not pleasure, which we share with animals. Not honour, which depends on others. Aristotle argues that happiness is an activity of the soul in accordance with virtue, exercised over a complete life. The question is not "what makes you feel good?" but "what kind of life is genuinely worth living?"
Virtue is not natural, but neither is it unnatural — it is a habit. We become brave by doing brave things, just as we become builders by building. The doctrine of the mean: every virtue sits between two vices, one of excess and one of deficiency. Courage lies between cowardice and recklessness; generosity between stinginess and extravagance. The right action is the one a person of practical wisdom would choose.
When are we responsible for what we do? Aristotle's answer: when we act voluntarily, with knowledge of the circumstances. Actions done under compulsion or in ignorance are different. Choice is deliberate desire — we choose means, not ends. From this foundation, he examines courage (facing the right dangers, for the right reasons, in the right way) and temperance (enjoying pleasures without being enslaved by them).
The social virtues: liberality (giving and spending well), magnificence (doing it on a grand scale), magnanimity (the crown of the virtues — greatness of soul), and the unnamed virtues of everyday social life. The magnanimous man is Aristotle's most controversial portrait: someone who knows his own worth, speaks the truth, moves slowly, and has a deep voice. Critics have been arguing about whether this is admirable or insufferable for two thousand years.
Justice — the virtue that holds communities together. Aristotle distinguishes distributive justice (dividing goods according to merit) from corrective justice (making wronged parties whole). He wrestles with equity: the law is general, but cases are particular. The just person does what is fair even when the law doesn't require it. This is the longest book in the Ethics and the one with the most direct political implications.
The intellectual virtues: scientific knowledge, technical skill, practical wisdom, intuitive reason, and philosophical wisdom. Practical wisdom (phronesis) is the master virtue — the capacity to see what the situation requires and act accordingly. It cannot be taught from a textbook. It requires experience, perception, and the right kind of character. This is why young people can be mathematical geniuses but not wise.
A puzzle: if we know what's right, why do we sometimes fail to do it? Aristotle's account of akrasia — weakness of will — argues against Socrates's claim that no one does wrong knowingly. Sometimes we know and still fail. The continent person resists temptation; the incontinent person doesn't. The difference matters, because it means moral improvement is possible for those who struggle.
Friendship — and Aristotle devotes more space to it than any other topic. Three kinds: friendships of utility, of pleasure, and of virtue. Only the last is complete, because only virtuous friends love each other for who they truly are. You cannot have many such friends, because true friendship requires time and intimacy. But without it, no one would choose to live, even with all other goods.
More on friendship: should we love ourselves? Yes, if we love what is best in us — our reason. The good person is a friend to himself. Benefactors love their beneficiaries more than they are loved in return, for the same reason that artists love their works. And the happy person needs friends, because a solitary life, no matter how virtuous, is incomplete. Human beings are social animals all the way down.
The final question: what is the highest form of happiness? Aristotle's answer is radical: it is contemplation — the pure activity of theoretical reason, godlike in its self-sufficiency. But he hedges: we are human, not divine, and the fully human life requires the moral virtues too. The Ethics closes with a bridge to the Politics: laws and institutions are needed to make citizens virtuous. Philosophy alone is not enough.