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Lord Sterling
Philosophy

Mill's harm principle

Archive 01319

Slide 1

A limit on coercion

John Stuart Mill's harm principle limits coercive interference with competent adults. Preventing harm to others differs from forcing someone to live as others prefer.

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On Liberty addresses both legal force and social pressure. The concern is not only official censorship, but also ways a community can constrain individuality without passing a formal law.

Slide 2

Offence is not automatically harm

Disapproval or discomfort does not by itself establish the kind of harm needed to justify coercion. The boundary still requires careful argument.

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Imagine neighbours disliking an unfamiliar style of dress. Their dislike alone differs from evidence that the wearer threatens their security. The example isolates moral dislike from a claim about damage to others.

Slide 3

Experiments in living matter

Mill values individuality and the testing of different ways of life. Permitting variation can benefit both the individual and the wider community.

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A practice considered strange may reveal a workable alternative to inherited custom. The argument supports room for exploration without assuming that every experiment succeeds or that its costs never affect other people.

Slide 4

The boundary is difficult

Conduct described as personal can have effects on others. Mill's principle requires distinguishing relevant harms from any imaginable indirect consequence.

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If every disappointment counted as sufficient harm, almost any choice could be prohibited. If no indirect effect ever counted, serious external costs could be ignored. Applying the principle needs a defended account of harm.

Slide 5

Liberty needs an argument

The harm principle offers a test for interference, not a complete list of permitted acts. Both restriction and protection should state their reasons clearly.

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In the clothing example, adding a genuine workplace safety requirement changes the case. Identifying the actual risk makes the argument assessable, whereas repeating that a custom is offensive leaves the original distinction unresolved.

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