John Stuart Mill

Mill allows you to warn someone about a dangerous choice and urge them to reconsider. He generally rejects paternalism, forcing a person for their own benefit, when an adult is capable of deciding.

The protected sphere includes conduct involving other adults with their free, informed consent. Disapproval of a neighbor's beliefs is different from a violated obligation. Mill argues that society should bear some indirect costs of freedom. Chapter 1, pp. 21 to 22.

His basis is utility, human well-being, grounded in "the permanent interests of man as a progressive being." He gives up an argument from an abstract right independent of utility. The value of developing a person's judgment belongs inside his account of well-being, alongside their knowledge of what suits them. Chapter 1, pp. 19 to 20.

Harm to others opens a question about interference; it doesn't settle it. Control can cause greater evils than the conduct it prevents. Mill requires an argument that intervention would help. He also allows losses through fair competition: losing an appointment to a rival doesn't give you a right to stop them competing. Chapter 5, pp. 178 to 179.

In a democracy, "the people" who wield power can oppress other people. Mill means the largest faction, or an active faction that presents itself as the majority. Elected governments still need limits.

A community can also make a dissenter afraid to express a belief that no law forbids. Mill describes people concealing religious doubts to protect their livelihood, and others narrowing their inquiries to subjects that are safe to discuss. Chapter 2, pp. 58 to 62.

Mill permits unfavorable judgments and avoiding someone's company. He distinguishes these responses from deliberately imposing suffering to punish a choice that belongs to the person making it. Other people's freedom of association complicates his distinction between social judgment and coercion. Chapter 4, pp. 145 to 147.

Silencing an opinion deprives everyone else of a possible correction. Mill uses the condemnation of Socrates to show how people can sincerely defend morality while persecuting someone later generations admire.

Governments must act despite uncertainty. Mill accepts this objection, then distinguishes acting on a belief after allowing challenges from preventing challenges that might expose its error. Confidence can be warranted; denying other people a hearing prevents them from examining its warrant.

A censor might answer that an opinion is socially destructive even if true. Mill replies that its usefulness is itself disputable. Calling an opinion "dangerous" still requires authorities to decide which arguments everyone may hear, while preventing scrutiny of that decision. Chapter 2, pp. 35 to 44.

Suppose the accepted belief is true. A person can repeat the conclusion without understanding its reasons or knowing how to answer an objection. Mill wants students to hear the opposing case from someone who believes it and can defend it well.

Mill makes an exception for mathematics, where he thinks learning a demonstration can be enough. His concern is with subjects such as politics and morality, where judgment requires weighing conflicting reasons. If no opponents remain, he recommends constructing the strongest objections ourselves.

A mistaken opinion may also contain a truth the accepted view overlooks. And a true belief can lose its effect on conduct when people inherit words without feeling their meaning. Mill's four grounds for free discussion are possible truth, partial truth, understanding reasons, and retaining a conviction's practical force.

Mill says sectarian hostility can grow worse through discussion. He hopes less committed listeners will benefit from hearing competing arguments. Permission to publish cannot ensure that those arguments will be heard and considered, and his defense makes no promise of inevitable agreement. Chapter 2, pp. 96 to 99.

A custom may have worked for other people without fitting your circumstances or desires. Different "experiments of living" let people test alternatives and others learn from them.

Choice also has value before we know its result. Someone who weighs a decision practices observation and judgment; carrying it out requires resolve and self-control. Even a well-chosen custom cannot develop those faculties if a person follows it only because everyone else does. This is the point of the tree passage: a good outcome imposed from outside can leave the person less able to direct their own life.

Mill values exceptional people who discover new possibilities. He also defends ordinary differences in taste and character. People shouldn't need to prove an unconventional life benefits the public before being allowed to live it. His condition is "short of injury to others."

"Corn" means grain. Mill protects criticism of the dealer while allowing punishment for incitement outside his house. His inclusion of a written placard makes the distinction clear: expression can become an instigation to harm in either medium.

A broader objection is that private conduct rarely stays private. Spending your money or damaging your health can affect your family, your employer, and anyone who depends on you. James Fitzjames Stephen presses this objection in Liberty, Equality, Fraternity (1873): the effects on self and others cannot be separated into two independent kinds of act.

Mill distinguishes neglecting a specific obligation from causing general social inconvenience. Spending so freely that you cannot pay your debts or support your family can justify punishment for breaching those duties. Society's wish that you were more useful to it doesn't create an equivalent obligation. Mill includes definite risks of damage as well as damage already done. Chapter 4, pp. 153 to 155.

Mill's difficult cases

The unsafe bridgeChapter 5, pp. 182 to 183

You may stop someone crossing an unsafe bridge if there's no time to warn them. Mill assumes they don't want to fall. Once a competent adult knows the risk, deciding whether to take it generally belongs to them. Intervention can make a choice informed without overruling it. Passage.

Poisons and drunkennessChapters 4 and 5

Poisons have legitimate uses. Mill accepts labels and records of sales to warn buyers and make criminal misuse harder. He rejects punishment for drunkenness alone, while allowing punishment for a soldier or policeman drunk on duty. A duty to other people changes the justification. Poisons, pp. 183 to 184; drunkenness, p. 154.

Harm through inactionChapter 1, p. 20

Mill permits compulsory testimony, a fair contribution to common defense, and duties to rescue in sufficiently clear cases. Requiring someone to prevent harm they didn't cause needs greater caution than holding them responsible for harmful actions. Passage.

Selling yourself into slaveryChapter 5, pp. 195 to 196

Mill refuses to enforce a voluntary contract of enslavement. Giving away all future freedom defeats the reason for protecting choice. This exception preserves a person's future capacity to choose, even against their present decision. Passage.

Offense presents another difficulty. Mill denies that a person's dislike of another's religion or private habits gives them an equal claim to control those habits. Yet in chapter 5 he permits prohibiting public "offences against decency," including acts permissible in private. He treats their public performance as an offense against others without fully explaining how it crosses his threshold. Page 186.

Mill leaves judgments about risk, consent, and enforceable obligations to be made. Calling something a harm cannot settle whether coercion would be justified.

Mill takes his epigraph from Wilhelm von Humboldt's The Sphere and Duties of Government, translated by Joseph Coulthard in 1854. Mill's version omits a word and turns a longer sentence into a standalone statement. Its aim is people developing in different ways. Later arguments about speech and private conduct draw related distinctions, within their own legal settings. Humboldt, chapter 6, p. 65.

Three comparisons

Abrams v. United States1919, p. 630

Justice Oliver Wendell Holmes, dissenting, defended "free trade in ideas" and the "competition of the market" as a test of truth. His market analogy resembles Mill's case for discussion. The Court upheld the convictions; Holmes's argument was the losing one. Opinion.

Brandenburg v. Ohio1969, p. 447

The Court distinguished advocacy from incitement directed toward imminent lawless action and likely to produce it. The corn-dealer invites comparison, though Mill doesn't formulate the Court's precise requirements of direction, imminence, and likelihood. Opinion.

The Wolfenden Report1957

The committee recommended that consensual sexual acts between adult men in private cease to be criminal. It argued that some private morality was "not the law's business." The ensuing debate between H. L. A. Hart and Patrick Devlin concerned whether preserving a society's shared morality could justify criminal law. That dispute tests Mill's distinction between disapproval and an injury others may prevent. Report in the Parliamentary Archives; the Hart-Devlin debate.