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What if doing right begins with happiness—and justice is the hardest test of that idea?
In Utilitarianism, John Stuart Mill asks what makes an action right or wrong. His answer rests on the greatest happiness principle: actions are right as they promote happiness, wrong as they produce its reverse. He defends this view against objections and asks whether morality can rest on one clear foundation.
Mill takes Jeremy Bentham’s account of happiness in a different direction: pleasures differ in quality, not just amount. Across five short chapters, he explores why anyone should obey a moral principle, offers a disputed proof, and faces a stubborn challenge: can usefulness account for our sense of justice?
What you’ll discover
- A foundation for morality Follow Mill’s search for a clear principle beneath our judgments of right and wrong.
- More than mere pleasure Consider why the quality of happiness matters, not simply how much we experience.
- Objections taken seriously Watch Mill answer charges against happiness as a goal, including whether it is attainable.
- The pull of duty Explore the feelings and pressures that bind people to a moral principle.
- Justice under scrutiny Test the claim that justice serves utility against the conviction that some acts are inherently unjust.
Who will love it
This book suits readers who like clear arguments about how to live, students of ethics and politics, and anyone curious why happiness, fairness and duty belong together.
What’s inside
The key ideas, in the 15-minute summary
- Morality needs a clear foundation
- Happiness includes more than bodily pleasure
- Experience helps judge higher pleasures
- Everyone's happiness counts in the judgment
- Everyday rules put utility into practice
- Conscience connects duty with social feeling
- Virtue can become part of happiness
- Justice protects the security everyone needs
- Judge rules by their human consequences
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Utilitarianism
by John Stuart Mill · 1861
A philosopher asks whether you would swap your mind for a pig's pleasures, and explains why pleasure's quality matters.
ChallengingUnder 2 hours to read20 languages
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“Though he had to preach a hard rationalism in religion, a hard competition in economics, a hard egoism in ethics, his own soul had all that silvery sensitiveness that can be seen in his fine portrait by Watts.”
In short
Would you rather be a satisfied pig or a dissatisfied Socrates? John Stuart Mill asks this in a short book that has shaped debates about right and wrong ever since.
Utilitarianism at a glance
- Reading time
- About 1 h 45 min1 h 20 min fast, 2 h 5 min slow
- Length
- 24,700 words
- Library level
- Challenging long sentences, a rich vocabulary
- First published
- 1861by John Stuart Mill
Reading time at 238 words a minute (fast 300, slow 200). How long the classics take to read · Updated
From the 15-minute summary · Key idea 1
Morality needs one clear first principle
For more than two thousand years, thinkers have argued about what makes an action right or wrong, and they still stand under rival banners. In the sciences, quarrels over first principles do little harm.
Morality is different because it is a practical art. Every action aims at some end, and rules of action take their colour from that end. So a standard of right and wrong ought to help people decide what is right, not merely follow after they have decided.
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Details
- First published
- 1861
- Language
- English
- Reading time
- 2 h 0 min
- Level
- Challenging
Cite this edition
Mill, John Stuart. Utilitarianism. Library of Alexandria, 2026, libraryofalexandria.com/products/utilitarianism.
Mill, J. S. (2026). Utilitarianism. Library of Alexandria. https://libraryofalexandria.com/products/utilitarianism (Original work published 1861)
Mill, John Stuart. Utilitarianism. Library of Alexandria, 2026. https://libraryofalexandria.com/products/utilitarianism.
@book{mill2026utilitarianism,
author = {Mill, John Stuart},
title = {Utilitarianism},
publisher = {Library of Alexandria},
year = {2026},
url = {https://libraryofalexandria.com/products/utilitarianism},
note = {First published 1861}
}
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What is Utilitarianism by John Stuart Mill about?
It defends the idea that right actions are those that promote happiness and wrong ones those that produce the opposite. Mill explains the theory, answers common objections, discusses conscience, offers a proof, and links justice to utility.
What is the greatest happiness principle?
The claim judges actions by their tendency to foster happiness, understood as pleasure and the absence of pain, or to bring about the opposite. The happiness counted is that of everyone affected.
What does better to be Socrates dissatisfied than a fool satisfied mean?
Mill means that quality of pleasure matters, not only amount. People who know both a thoughtful life and a simple one prefer the thoughtful life, even though it brings more dissatisfaction, because it engages higher faculties.
The author
John Stuart Mill
1806–1873 · British philosopher and political economist
John Stuart Mill was a British philosopher and political economist, born in London in 1806. He wrote A System of Logic (1843), On Liberty (1859), Utilitarianism (1861), and The Subjection of Women (1869). He lived in England and France and died in Avignon in 1873. His Autobiography appeared that year.
“It is better to be a dissatisfied human being than a satisfied pig; better to be Socrates dissatisfied than a fool satisfied.”
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