Aristotle vs John Stuart Mill
Aristotle and Mill are the two most influential developers of broadly welfare-centered ethics in the Western tradition, though Aristotle's eudaimonism and Mill's utilitarianism reach the question of welfare from very different directions. Reading them together brings out what is distinctive about each.
At a glance
| Aristotle | John Stuart Mill | |
|---|---|---|
| Dates | 384 BC – 322 BC | 1806 – 1873 |
| Nationality | Greek | British |
| Era | Ancient | Modern |
| Movements | Peripatetic School, Ancient Greek Philosophy | Utilitarianism, Empiricism |
| Profile | Aristotle → | John Stuart Mill → |
Where they agree
Both held that the good life is a matter of human welfare, both rejected purely deontological accounts of morality, and both treated the analysis of pleasure, happiness, and the cultivation of character as central to ethics. Mill's qualitative utilitarianism — the doctrine that some pleasures are higher than others — moved the utilitarian framework closer to the Aristotelian view that flourishing is a structured achievement rather than a quantity of contentment.
Where they disagree
Aristotle's eudaimonia is the activity of the soul in accordance with virtue across a complete life, lived within a well-ordered political community. Mill's utility is the aggregate of pleasures across all sentient beings affected by an action, and the morally right action is the one that maximizes this aggregate. Where Aristotle's good is the well-formed character of the individual agent within community, Mill's good is the impartial sum of welfare across all parties. Their disagreement runs through their accounts of justice, individual rights, and the relation of the agent to the moral community.
Representative quotes
Aristotle
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“All men by nature desire to know.”
Metaphysics Book I, 980a.21 : Opening paragraph of Metaphysics | Variant: All men by nature desire knowledge. | The first sentence is in the Oxford Dictionary of Scientific Quotations (2005), 21:10 -
“Friendship is a single soul dwelling in two bodies.”
A friend is one soul abiding in two bodies. -
“The roots of education are bitter, but the fruit is sweet.”
Diogenes Laertius, Lives of Eminent Philosophers
John Stuart Mill
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“It is better to be a human being dissatisfied than a pig satisfied; better to be Socrates dissatisfied than a fool satisfied.”
Ch. 2 -
“He who knows only his own side of the case knows little of that.”
Ch. II: Of the Liberty of Thought and Discussion -
“If all mankind minus one were of one opinion, mankind would be no more justified in silencing that one person than he, if he had the power, would be justified in silencing mankind.”
Ch. II: Of the Liberty of Thought and Discussion
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