An Excerpt from Law, Property Rights, and Air Pollution

By Murray N. Rothbard


The normative principle I am suggesting for the law is simply this: No action should be considered illicit or illegal unless it invades, or aggresses against, the person or just property of another. Only invasive actions should be declared illegal, and combated with the full power of the law. The invasion must be concrete and physical. There are degrees of seriousness of such invasion, and hence, different proper degrees of restitution or punishment. “Burglary,” simple invasion of property for purposes of theft, is less serious than “robbery,” where armed force is likely to be used against the victim. Here, however, we are not concerned with the questions of degrees of invasion or punishment, but simply with invasion per se.

If no man may invade another person’s “just” property, what is our criterion of justice to be? There is no space here to elaborate on a theory of justice in property titles. Suffice it to say that the basic axiom of libertarian political theory holds that every man is a selfowner, having absolute jurisdiction over his own body. In effect, this means that no one else may justly invade, or aggress against, another’s person. It follows then that each person justly owns whatever previously unowned resources he appropriates or “mixes his labor with.” From these twin axioms — self-ownership and “homesteading” — stem the justification for the entire system of property rights titles in a free-market society. This system establishes the right of every man to his own person, the right of donation, of bequest (and, concomitantly, the right to receive the bequest or inheritance), and the right of contractual exchange of property titles.

Legal and political theory have committed much mischief by failing to pinpoint physical invasion as the only human action that should be illegal and that justifies the use of physical violence to combat it. The vague concept of “harm” is substituted for the precise one of physical violence. Consider the following two examples. Jim is courting Susan and is just about to win her hand in marriage, when suddenly Bob appears on the scene and wins her away. Surely Bob has done great “harm” to Jim. Once a nonphysical-invasion sense of harm is adopted, almost any outlaw act might be justified. Should Jim be able to “enjoin” Bob’s very existence?

Similarly, A is a successful seller of razor blades. But then B comes along and sells a better blade, teflon-coated to prevent shaving cuts. The value of A’s property is greatly affected. Should he be able to collect damages from B, or, better yet, to enjoin B’s sale of a better blade? The correct answer is not that consumers would be hurt if they were forced to buy the inferior blade, although that is surely the case. Rather, no one has the right to legally prevent or retaliate against “harms” to his property unless it is an act of physical invasion. Everyone has the right to have the physical integrity of his property inviolate; no one has the right to protect the value of his property, for that value is purely the reflection of what people are willing to pay for it. That willingness solely depends on how they decide to use their money. No one can have a right to someone else’s money, unless that other person had previously contracted to transfer it to him.

Legal and political theory have committed much mischief by failing to pinpoint physical invasion as the only human action that should be illegal and that justifies the use of physical violence to combat it.

In the law of torts, “harm” is generally treated as physical invasion of person or property. The outlawing of defamation (libel and slander) has always been a glaring anomaly in tort law. Words and opinions are not physical invasions. Analogous to the loss of property value from a better product or a shift in consumer demand, no one has a property right in his “reputation.” Reputation is strictly a function of the subjective opinions of other minds, and they have the absolute right to their own opinions whatever they may be. Hence, outlawing defamation is itself a gross invasion of the defamer’s right of freedom of speech, which is a subset of his property right in his own person.

An even broader assault on freedom of speech is the modern Warren-Brandeis-inspired tort of invasion of the alleged right of “privacy,” which outlaws free speech and acts using one’s own property that are not even false or “malicious.”

In the law of torts, “harm” is generally treated as physical invasion of person or property and usually requires payment of damages for “emotional” harm if and only if that harm is a consequence of physical invasion. Thus, within the standard law of trespass — an invasion of person or property — “battery” is the actual invasion of someone else’s body, while “assault” is the creation by one person in another of a fear, or apprehension, of battery.

To be a tortious assault and therefore subject to legal action, tort law wisely requires the threat to be near and imminent. Mere insults and violent words, vague future threats, or simple possession of a weapon cannot constitute an assault18; there must be accompanying overt action to give rise to the apprehension of an imminent physical battery. Or, to put it another way, there must be a concrete threat of an imminent battery before the prospective victim may legitimately use force and violence to defend himself.

Physical invasion or molestation need not be actually “harmful” or inflict severe damage in order to constitute a tort. The courts properly have held that such acts as spitting in someone’s face or ripping off someone’s hat are batteries. Chief Justice Holt’s words in 1704 still seem to apply: “The least touching of another in anger is a battery.” While the actual damage may not be substantial, in a profound sense we may conclude that the victim’s person was molested, was interfered with, by the physical aggression against him, and that hence these seemingly minor actions have become legal wrongs.


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