Book 3 begins with a courtroom question: who earns praise, blame, pardon, or pity? Aristotle answers by sorting actions according to their source. Pure compulsion comes from outside the person. A wind blows you, or captors drag you, and nothing in you initiates the motion. Those cases are involuntary. Storm cargo and the tyrant's bargain sit in a harder middle. No sailor loves dumping goods into the sea; no parent loves obeying a base command. Still, at the moment of action, the person selects that path to save the ship or the family. Because the origin of the act remains inside the agent, Aristotle ranks these mixed cases closer to voluntary than to forced motion, while still allowing pity for the squeeze that made the options ugly. Confuse those categories and public judgment turns either cruel or soft: punishing the dragged body, or excusing every ugly bargain as if no one stood at the helm.
Knowledge failures split the same way. Missing a particular fact can excuse an act if discovery brings pain and regret: the cup was poison, the stranger was an enemy, the weapon was live. Missing what you were obliged to learn does not. Drunkenness and careless neglect of law are his standing examples. The legislature still holds you, because you could have stayed sober or studied the rule before the damage. Praise and punishment only make sense if people are treated as agents who can notice, learn, and steer. Aristotle is not inventing a harsh courtroom; he is describing how cities already assign honor and penalty, then asking ethics to match that grain of reality.
From there he narrows from action to choice. Wish, appetite, and sudden anger are not yet choice. Children and animals share appetite and spirit; choice belongs to those who can weigh routes. Ends are wished for. Means are investigated. A doctor asks how to heal, a speaker how to persuade, a general how to win. Nobody sits around deliberating the solstices or another city's constitution as if those were levers in their hand. Deliberation targets what you can actually do when several paths remain open and the outcome is uncertain. It finishes as choice: a deliberate desire aimed at something in your power. Wish, meanwhile, reaches for the good, or for what merely looks good. The well-formed person sees the real target; the malformed person is pulled by pleasure that wears a false halo. Error about the end is therefore not a small technicality. It warps every later calculation about how to get there.
That is why Aristotle refuses the shrug that says character is fate. Liberality, justice, and self-control concern means, and means are selectable. Keep spending, lying, or indulging and you grow the matching disposition, the way a body grows sick from a long diet. You cannot yank yesterday's stone back into your fist, and you cannot wake up tomorrow suddenly temperate by a single decree. You could, earlier, have thrown differently. Habit is not a side effect of choice; it is how excellence and corruption settle into the soul. The terrifying and hopeful half of the claim travel together: you authored much of what now feels automatic, which means future authorship is still possible where practice remains open.
Courage occupies the next stretch of the book. It is a mean about fear and confidence, tested most sharply by noble death in battle. Bravery endures pain for a fine end. Escaping poverty, ducking shame, or hunting applause can produce bold motion without producing courage. Some fears ought to be felt: disgrace is base not to dread. Aristotle then catalogs look-alikes that fool observers and sometimes fool the actor. Civic nerve stiffened by law and honor can stand firm in the ranks. Veterans stay calm because they have met the noise before. Rage charges without judgment. Swagger fills a room without substance. Ignorant daring walks forward because it has not measured the cliff. The brave person alone meets the right threat, at the right time, for the right reason, with fear and confidence measured rather than erased. Courage is a stance under fear, not the fantasy of fearlessness.
Temperance closes the book. Not every delight is its subject. Honor, study, and the pleasures of sight or hearing belong to other discussions. Temperance governs touch and taste: food, drink, sex, the animal appetites that renew every day. Excess wants them too much or in the wrong way and hurts when they are gone. The temperate person brings desire into agreement with reason so appetite and judgment stop fighting at the table. Pleasure can recruit you without the panic that pain produces, so self-indulgence can feel smoother and more freely entered than cowardice, yet both, once installed, resist easy reversal. Book 3's through-line is practical and personal: map the source of the act, refuse counterfeit bravery, train appetite before it rewrites the target, and watch how repeated selection hardens into the person you become.