To return to the example of the accidental blow with a stick lifted in self-defence, there is no difference between hitting a person standing in one's rear and hitting one who was pushed by a horse within range of the stick just as it was lifted, provided that it was not possible, under the circumstances, in the one case to have known, in the other to have anticipated, the proximity. In either case there is wanting the only element which distinguishes voluntary acts from spasmodic muscular contractions as a ground of liability. In neither of them, that is to say, has there been an opportunity of choice with reference to the consequence complained of,—a chance to guard against the result which has come to pass. A choice which entails a concealed consequence is as to that consequence no choice.
The general principle of our law is that loss from accident must lie where it falls, and this principle is not affected by the fact that a human being is the instrument of misfortune. But relatively to a given human being anything is accident which he could not fairly have been expected to contemplate as possible, and therefore to avoid. In the language of the late Chief Justice Nelson of New York: "No case or principle can be found, or if found can be maintained, subjecting an individual to liability for [95] an act done without fault on his part.... All the cases concede that an injury arising from inevitable accident, or, which in law or reason is the same thing, from an act that ordinary human care and foresight are unable to guard against, is but the misfortune of the sufferer, and lays no foundation for legal responsibility." /1/ If this were not so, any act would be sufficient, however remote, which set in motion or opened the door for a series of physical sequences ending in damage; such as riding the horse, in the case of the runaway, or even coming to a place where one is seized with a fit and strikes the plaintiff in an unconscious spasm. Nay, why need the defendant have acted at all, and why is it not enough that his existence has been at the expense of the plaintiff? The requirement of an act is the requirement that the defendant should have made a choice. But the only possible purpose of introducing this moral element is to make the power of avoiding the evil complained of a condition of liability. There is no such power where the evil cannot be foreseen. /2/ Here we reach the argument from policy, and I shall accordingly postpone for a moment the discussion of trespasses upon land, and of conversions, and will take up the liability for cattle separately at a later stage.
A man need not, it is true, do this or that act, the term act implies a choice,—but he must act somehow. Furthermore, the public generally profits by individual activity. As action cannot be avoided, and tends to the public good, there is obviously no policy in throwing the hazard of what is at once desirable and inevitable upon the actor. [96] The state might conceivably make itself a mutual insurance company against accidents, and distribute the burden of its citizens' mishaps among all its members. There might be a pension for paralytics, and state aid for those who suffered in person or estate from tempest or wild beasts. As between individuals it might adopt the mutual insurance principle pro tanto, and divide damages when both were in fault, as in the rusticum judicium of the admiralty, or it might throw all loss upon the actor irrespective of fault. The state does none of these things, however, and the prevailing view is that its cumbrous and expensive machinery ought not to be set in motion unless some clear benefit is to be derived from disturbing the status quo. State interference is an evil, where it cannot be shown to be a good. Universal insurance, if desired, can be better and more cheaply accomplished by private enterprise. The undertaking to redistribute losses simply on the ground that they resulted from the defendant's act would not only be open to these objections, but, as it is hoped the preceding discussion has shown, to the still graver one of offending the sense of justice. Unless my act is of a nature to threaten others, unless under the circumstances a prudent man would have foreseen the possibility of harm, it is no more justifiable to make me indemnify my neighbor against the consequences, than to make me do the same thing if I had fallen upon him in a fit, or to compel me to insure him against lightning.
I must now recur to the conclusions drawn from innocent trespasses upon land, and conversions, and the supposed analogy of those cases to trespasses against the person, lest the law concerning the latter should be supposed to lie between two antinomies, each necessitating with equal cogency an opposite conclusion to the other.
[97] Take first the case of trespass upon land attended by actual damage. When a man goes upon his neighbor's land, thinking it is his own, he intends the very act or consequence complained of. He means to intermeddle with a certain thing in a certain way, and it is just that intended intermeddling for which he is sued. /1/ Whereas, if he accidentally hits a stranger as he lifts his staff in self defence, the fact, which is the gist of the action,—namely, the contact between the staff and his neighbor's head,—was not intended, and could not have been foreseen. It might be answered, to be sure, that it is not for intermeddling with property, but for intermeddling with the plaintiff's property, that a man is sued; and that in the supposed cases, just as much as in that of the accidental blow, the defendant is ignorant of one of the facts making up the total environment, and which must be present to make his action wrong. He is ignorant, that is to say, that the true owner either has or claims any interest in the property in question, and therefore he does not intend a wrongful act, because he does not mean to deal with his neighbor's property. But the answer to this is, that he does intend to do the damage complained of. One who diminishes the value of property by intentional damage knows it belongs to somebody. If he thinks it belongs to himself, he expects whatever harm he may do to come out of his own pocket. It would be odd if he were to get rid of the burden by discovering that it belonged to his neighbor. It is a very different thing to say that he who intentionally does harm must bear the loss, from saying that one from whose acts harm follows accidentally, as [98] a consequence which could not have been foreseen, must bear it.
Next, suppose the act complained of is an exercise of dominion over the plaintiff's property, such as a merely technical trespass or a conversion. If the defendant thought that the property belonged to himself, there seems to be no abstract injustice in requiring him to know the limits of his own titles, or, if he thought that it belonged to another, in holding him bound to get proof of title before acting. Consider, too, what the defendant's liability amounts to, if the act, whether an entry upon land or a conversion of chattels, has been unattended by damage to the property, and the thing has come back to the hands of the true owner. The sum recovered is merely nominal, and the payment is nothing more than a formal acknowledgment of the owner's title; which, considering the effect of prescription and statutes of limitation upon repeated acts of dominion, is no more than right. /1/ All semblance of injustice disappears when the defendant is allowed to avoid the costs of an action by tender or otherwise.
But suppose the property has not come back to the hands of the true owner. If the thing remains in the hands of the defendant, it is clearly right that he should surrender it. And if instead of the thing itself he holds the proceeds of a sale, it is as reasonable to make him pay over its value in trover or assumpsit as it would have been to compel a surrender of the thing. But the question whether the defendant has subsequently paid over the proceeds of the sale of a chattel to a third person, cannot affect the rights of the true owner of the [99] chattel. In the supposed case of an auctioneer, for instance, if he had paid the true owner, it would have been an answer to his bailor's claim. If he has paid his bailor instead, he has paid one whom he was not bound to pay, and no general principle requires that this should be held to divest the plaintiff's right.
Another consideration affecting the argument that the law as to trespasses upon property establishes a general principle, is that the defendant's knowledge or ignorance of the plaintiff's title is likely to lie wholly in his own breast, and therefore hardly admits of satisfactory proof. Indeed, in many cases it cannot have been open to evidence at all at the time when the law was settled, before parties were permitted to testify. Accordingly, in Basely v. Clarkson, /1/ where the defence set up to an action of trespass quare clausum was that the defendant in mowing his own land involuntarily and by mistake mowed down some of the plaintiff's grass, the plaintiff had judgment on demurrer. "For it appears the fact was voluntary, and his intention and knowledge are not traversable; they can't be known."
This language suggests that it would be sufficient to explain the law of trespass upon property historically, without attempting to justify it. For it seems to be admitted that if the defendant's mistake could be proved it might be material. /2/ It will be noticed, further, that any general argument from the law of trespass upon laud to that governing trespass against the person is shown to be misleading by the law as to cattle. The owner is bound at his peril [100] to keep them off his neighbor's premises, but he is not bound at his peril in all cases to keep them from his neighbor's person.
The objections to such a decision as supposed in the case of an auctioneer do not rest on the general theory of liability, but spring altogether from the special exigencies of commerce. It does not become unjust to hold a person liable for unauthorized intermeddling with another's property, until there arises the practical necessity for rapid dealing. But where this practical necessity exists, it is not surprising to find, and we do find, a different tendency in the law. The absolute protection of property, however natural to a primitive community more occupied in production than in exchange, is hardly consistent with the requirements of modern business. Even when the rules which we have been considering were established, the traffic of the public markets was governed by more liberal principles. On the continent of Europe it was long ago decided that the policy of protecting titles must yield to the policy of protecting trade. Casaregis held that the general principle nemo plus juris in alium transferre potest quam ipse habet must give way in mercantile transactions to possession vaut titre. /1/ In later times, as markets overt have lost their importance, the Factors' Acts and their successive amendments have tended more and more in the direction of adopting the Continental doctrine.