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John Stuart Mill

The philosopher of liberty · Individual freedom, utilitarian ethics, and the defense of dissent.

Liberalism Utilitarianism Feminism Reform

On Liberty: The Harm Principle

John Stuart Mill's On Liberty (1859) is the most influential defense of individual freedom in the English language. Written with his wife Harriet Taylor Mill, it argues that society has no right to interfere with an individual's actions unless they harm others. This is the "harm principle," and it remains the foundational argument for freedom of speech, conscience, and lifestyle.

The Harm Principle

Freedom of Thought and Expression

Individuality and Experiments in Living

Utilitarianism: The Greatest Happiness

Mill's ethical theory, Utilitarianism (1863), defends the greatest happiness principle: the right action is the one that produces the greatest happiness for the greatest number. But Mill refined this theory in ways that distinguish him from earlier utilitarians like Jeremy Bentham.

Quality vs. Quantity of Pleasure

The Proof of Utilitarianism

Representative Government

In Considerations on Representative Government (1861), Mill argued that democracy is the best form of government because it educates citizens and promotes their moral development. But he also worried about the tyranny of the majority and proposed several safeguards.

The Subjection of Women

Mill's The Subjection of Women (1869), co-written with Harriet Taylor Mill, was the most radical feminist text of the 19th century. It argued that the subordination of women is a relic of feudalism and has no place in a modern society.

Mill and India

Mill worked for the East India Company for 35 years and wrote extensively about India. His views are controversial: he was a liberal reformer but also a defender of colonial rule.

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