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Starvard University · Aristotle and the Good Life
Twenty three centuries ago a Greek teacher asked the most practical question in philosophy: what does a good human life actually consist of, and how do you build one? His answer, worked out lecture by lecture, is still the wisest coaching ever written on happiness, habit, and friendship.
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Imagine a very wise coach who watches how people actually live and asks one big question: what makes a life go well? Aristotle says a good life is not luck or a single happy day. It is built, the way you build a skill, by practising good actions until they become habits, aiming between too much and too little, and sharing your life with good friends.
Aristotle wrote the Nicomachean Ethics as lectures for his school in Athens, the Lyceum, and it may be named for his son Nicomachus. He argues that happiness, in Greek eudaimonia, is not a feeling that comes and goes but a whole life lived well: the activity of a person thinking clearly, choosing bravely and generously, and enjoying the work. One good day no more makes a happy life, he says, than one swallow makes a spring.
The Ethics does not stand alone. Its companion, the Politics, carries the same questions into the city, because Aristotle believed human beings complete one another in communities. This course teaches both books together, and it ends with homework of the best kind: a small, honest virtue plan for your own life, built from his methods and fitted to your days.
The whole course in brief
What you will be able to do after this course
The eight lessons
Lesson 1
Aristotle was born in 384 BC in Stagira, a small Greek town in the north, and his childhood stood close to power: his father Nicomachus was physician to the king of Macedon. When his parents died, a guardian raised him, and at seventeen the young man travelled south to Athens and walked into the most famous school in the world, Plato’s Academy. He stayed for twenty years. He arrived as a student, became a researcher and teacher, and earned a reputation for reading everything. Plato is said to have called him the mind of the school, and the house where he devoured books its reading room.
Teacher and student did not agree about everything, and the disagreement matters for this course. Plato taught that the deepest realities are perfect Forms beyond this world, and that a good life turns the soul toward them. Aristotle respected the vision and then gently set it aside. Again and again his own work returns to this world: to animals dissected and classified, to constitutions collected and compared, to the habits he could watch in real people. When Plato died in 347 BC and the Academy passed to another man, Aristotle left Athens and spent years in Asia Minor and on the island of Lesbos, studying sea creatures with his friend Theophrastus.
In 343 BC King Philip of Macedon summoned him home to tutor a thirteen year old prince named Alexander. For several years Aristotle taught the boy who would conquer the known world, grounding him in Homer, medicine, and Greek thought. Then, in 335 BC, with Alexander on the throne, Aristotle returned to Athens and founded a school of his own, the Lyceum, named for a grove sacred to Apollo. Its covered walk, the peripatos, gave his followers their nickname, the Peripatetics, the walking philosophers. There he built a great library and lectured twice a day. The Nicomachean Ethics, the book at the heart of this course, survives as notes from that teaching, and its name may honour his father or his son, both called Nicomachus. When Alexander died in 323 BC, Athens turned against Macedon and Aristotle, its most famous Macedonian friend, was charged and withdrew to Chalcis. He died there in 322 BC, leaving behind the most wide ranging body of work the ancient world produced.
Lesson 2
Every lesson in this course hangs on one question: what is the best thing a human life can aim at? Aristotle opens the Ethics by observing that every art, every enquiry, and every action aims at some good, and he gives the chief good a crisp description: it is “that which all things aim at.” Ask people what that final good is, the thing wanted for itself and never as a means to something else, and most give the same name. As he puts it, “So then Happiness is manifestly something final and self-sufficient, being the end of all things which are and may be done.” Money, honour, and pleasure all fail the test, because we want them for the sake of being happy, and happiness itself we want for nothing beyond it.
The Greek word is eudaimonia, and translating it as happiness can mislead. A feeling comes and goes with the weather of a day, but Aristotle means something sturdier: flourishing, a life going well as a whole. To find its content he uses his favourite tool, the argument from function. A flute player’s good lies in playing well, a sculptor’s in sculpting well, so what is the work of a human being as such? Not merely living, since plants live. Not merely feeling, since animals feel. Our distinctive work is activity guided by reason, thinking, choosing, and acting well. So the good of man, he concludes, comes to be “a working of the Soul in the way of Excellence,” done well and nobly, over a complete life.
That last condition, a complete life, carries one of his most loved images: “it is not one swallow or one fine day that makes a spring, so it is not one day or a short time that makes a man blessed and happy.” A single triumph, a single disgrace, does not settle the verdict on a life. Flourishing is a pattern, not a moment. Aristotle is also honest that character is not the whole story. Health, friends, decent resources, and some luck all matter, and great misfortune can mar even a good life. His claim is narrower and stronger: of everything in our power, the activity of a well formed soul comes first, and it is the part we can actually work on. The next lesson shows how.
Lesson 3
Suppose flourishing means acting excellently. Can excellence be taught like geometry, or is it something else? Aristotle divides human excellence in two. Excellence of thought, wisdom and judgment, grows mainly from teaching and takes time and experience. Excellence of character, the virtues like courage, self control, and generosity, grows from a different root entirely. Moral virtue, he notes, comes from custom and habit, and the Greek word for character is itself a slight turn of the word for habit. Nobody is born just or brave, the way we are born able to see. Nature gives us the capacity, and practice does the rest.
His proof is wonderfully practical. Skills and virtues are learned the same way, by doing. “Men come to be builders, for instance, by building; harp-players, by playing on the harp: exactly so, by doing just actions we come to be just; by doing the actions of self-mastery we come to be perfected in self-mastery; and by doing brave actions brave.” Nobody waits to feel brave before acting bravely. You act bravely, awkwardly at first, with your knees shaking, and the feeling follows the action until standing firm becomes second nature. The same acts that build a virtue badly done can build its opposite, which is why Aristotle insists the stakes of daily practice are so high: we are always training something.
This is also why he cares so much about upbringing and law. Cities, he says, make their citizens good by habituation, and that is precisely what a good lawgiver intends. Parents do the same work at a smaller scale. A child praised for honesty and gently corrected for cruelty is having a character built before he can argue about it. And Aristotle adds a subtle test of progress: pleasure. The beginner does the right thing and finds it a struggle. The person in whom virtue has truly taken root does the right thing and enjoys it, the way a trained musician enjoys a difficult piece. If your good actions still feel like a tax, the habit is young. Keep practising. Feelings are lagging indicators, and they do catch up.
Lesson 4
If virtues are habits, habits of what exactly? Aristotle’s answer is his most famous idea, the doctrine of the mean. Feelings and actions, he observes, can overshoot or fall short. Fear, anger, appetite, spending, and self regard all admit of too much and too little, and both extremes spoil us. Courage is his model case. The person who fears everything and flees is a coward. The person who fears nothing and charges at every danger is rash. Courage stands between them: feeling fear where fear belongs, and standing firm anyway, for a worthy reason, in the right way and at the right time.
He states the principle in a sentence worth memorising: “Virtue finds, and when found adopts, the mean.” But hear the qualifications, because they keep the idea from becoming a bland advice to be moderate in all things. The mean is not an arithmetic midpoint, not half a loaf between two loaves. It is relative to us: the right amount of food for a champion wrestler would crush a beginner, and the right response to an insult differs for a general and a schoolboy. Finding the mean takes practical wisdom, the trained judgment of an experienced person, and Aristotle admits it is hard. Error, he says, can happen in many ways, while success happens in only one, like missing a target in every direction but hitting it in the centre alone.
Two more clarifications complete the picture. First, some things have no good mean at all. There is no right amount of murder, theft, or betrayal, because their very names include badness. The mean is a tool for feelings and actions that are good when rightly measured, not a licence to do a little of anything. Second, the mean is not mediocrity. Judged by the standard of excellence, Aristotle says, virtue is actually an extreme: the extreme of goodness. The coward and the daredevil are both common and both easy. The person who has trained his feelings to land, again and again, in the narrow country between them has achieved something rare. That narrow country is where the next lesson goes looking, virtue by virtue.
Lesson 5
With the mean in hand, Aristotle walks through the virtues one by one, and three of them show his method at its best. Courage, first, concerns fear and confidence, above all fear of death in battle, the noblest danger of his world. The courageous person is not fearless. He fears what is genuinely terrible, as any sane person does, but he endures it for the sake of what is noble, in the right measure and at the right time. Aristotle is careful to strip off the lookalikes: the veteran who stands firm only from experience, the hot tempered man who charges from rage, the citizen soldier who fights from fear of disgrace. Each resembles courage, and each breaks down when its real motive is removed.
Generosity, his virtue of giving, is a mean about money. The generous person gives the right amounts, to the right people, at the right times, and takes pleasure in it. On one side stands the wasteful person, who gives too much, to the wrong people, and soon has nothing left to give. On the other stands the stingy person, who gives too little and feels every coin as a small wound. Aristotle remarks, with dry humour, that wasteful people are easier to cure than stingy ones, since age and poverty teach the wasteful their lesson, while stinginess only deepens with the years. He also ties giving to means: generosity is measured not by the size of the gift but by its proportion to what the giver has, which is why a small gift freely given can outshine a fortune given for show.
Justice gets the longest treatment in the whole Ethics, an entire book, because it is the virtue that faces outward toward other people. In its widest sense justice is complete virtue exercised toward others, lawfulness and fairness woven together, and Aristotle quotes the proverb that in justice every virtue is summed up. In its narrower sense it is about fair shares: giving each person what is due, in proportion, neither grasping more than your share nor quietly accepting less. Put the three virtues together and a pattern emerges. Each is a trained balance, each has its counterfeits, and each can be recognised by the same test: right feeling, right measure, right reason, sustained over time.
Lesson 6
Aristotle gives friendship more space than any other single topic in the Ethics, two whole books, and he opens with a claim as warm as anything in philosophy: friendship “is a thing most necessary for life, since no one would choose to live without friends though he should have all the other good things in the world.” The rich need friends to share and protect their good fortune. The poor need friends as a refuge. The young need friends to keep them from error, the old need friends for care, and people in their prime need friends for noble deeds, since two together can plan and achieve what neither would manage alone.
His famous sorting divides friendship by its motive, into three kinds. Some friendships rest on usefulness: business partners, colleagues, the neighbour with a ladder. Each loves not the other person but the good that comes from him, so when the usefulness ends, the friendship usually ends with it, and neither party can fairly complain. Other friendships rest on pleasure: the witty dinner companion, the teammate loved for the game itself. These are warmer, common among the young, and just as fragile, dissolving when tastes change. Both kinds are real friendships, Aristotle insists, but they are friendships by accident, aimed at a benefit that happens to come through a person rather than at the person himself.
The third kind is the complete one: friendship between good people who wish each other well for the other’s own sake. Each loves the friend’s character, and character lasts, so these friendships last. They include the other two kinds as bonuses, since good friends are both useful and delightful to each other, but their foundation is different. They are also rare and slow. Aristotle observes that you cannot truly know someone until you have eaten the proverbial salt together, shared enough life for trust to be tested and proven. A wish for friendship can arise in a day, but friendship itself takes time, familiarity, and mutual goodwill actually recognised on both sides. His conclusion is quietly demanding: if you want friends of the third kind, the surest strategy is to become the sort of person such a friendship requires.
Lesson 7
The Ethics ends by handing its questions to a second book, the Politics, because Aristotle does not believe a good life can be built alone. The Politics opens with the city growing before our eyes: a household joins with other households into a village, villages join into a city, and the city, complete and self sufficient, exists not merely so that people can live but so that they can live well. From this he draws his most quoted conclusion about human nature: a city “is a natural production, and that man is naturally a political animal,” more social than bees or herd animals, because humans alone have speech, and speech lets us argue about justice and share a vision of the good.
This reframes everything the Ethics taught. Habits are formed by upbringing, laws, and the company we keep, so the quality of a community is not background decoration for the good life, it is one of its main ingredients. Legislators, Aristotle says, care even more about friendship than about justice, because a city held together by goodwill needs fewer courts, while a city of merely just strangers still needs friendship to flourish. The examined life and the shared life belong together. Choosing your city, your neighbourhood, your company, and your customs is, on his account, a moral decision of the first order.
Honesty requires one plain sentence here. In the Politics Aristotle defended slavery as natural for some people, and argued that women should be ruled by men, claims his own principles about reason and flourishing should have led him to reject, and which this course rejects with him: we take his ethics further than he did, to every human being. It is worth seeing how a great mind can be bounded by its age, and worth practising the charity and the criticism together. Even with those failures marked, his central insight stands and deepens the rest of the course: nobody flourishes in isolation, and the final lesson therefore sends you back to your own street, your own household, and your own city.
Lesson 8
Aristotle never intended his book to be merely admired. He says plainly that the point of studying what virtue is, is not knowledge but becoming good, and that words alone are like a patient who listens carefully to the doctor and then ignores the prescription. So this final lesson turns the course into a plan, using his own machinery. Begin where he begins, with the end. Write down, in one honest sentence, what flourishing would look like in your actual life: not a fantasy of fame, but the activity of your soul going well, in your work, your household, and your friendships, over the long run. That sentence is your target, and like his archers, you will aim better for having one in view.
Next, choose one virtue, not five. Use the doctrine of the mean as a diagnostic. Take a feeling or habit you know well, temper, spending, speech, courage, and name its excess and its defect in your own case, concretely. Perhaps you speak too much in anger and too little in honesty, which is the same virtue, truthfulness about yourself, missed in both directions. Then prescribe practice the way Lesson 3 taught: small, repeatable acts, done deliberately, in real situations, until the balance starts to feel natural. Aristotle also advises a useful trick for a stubborn lean: drag yourself toward the opposite extreme for a while, as people straighten a bent stick by bending it back past straight, because we reach the middle more easily by aiming away from our favourite error.
Finally, build the supports he says every good life needs. Give the plan time, remembering the swallow: judge it by seasons, not by days. Give it friends, ideally of the third kind, who know what you are attempting and will tell you the truth when you drift. Give it a place, a household routine, a community, a city, that makes the right acts easier rather than harder. And return, now and then, to thought itself, which Aristotle ranks as our highest activity: the quiet contemplation in which a life looks at itself and understands. Do these things and you will not merely have finished a course about the good life. You will have started, in his demanding and hopeful sense, to live one.
Sources
This course is taught from two books by Aristotle, both free for anyone to read in full at Project Gutenberg. The Ethics supplies Lessons 1 to 6 and Lesson 8, and the Politics supplies Lesson 7 and the cityward turn at the end of the Ethics itself.
Graduation
You walked with Aristotle from Plato’s Academy to his own Lyceum, learned to call happiness flourishing, built virtue the way builders and harp players are built, aimed at the mean between cowardice and rashness, sorted your friendships into his three kinds, and faced the hard pages of the Politics honestly. Best of all, you left with a virtue plan of your own. Congratulations: the course is finished, and the practice, which was always the point, can begin today.
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