Nineteenth-century metaphysical theories of property carry out these ideas or develop this method. And it is to be noted that they are all open to attack from the standpoint of the theory of res extra commercium. Thus Hegel's theory comes to this: Personality involves exercise of the will with respect to things. When one has exercised his will with respect to a thing and so has acquired a power of control over it, other wills are excluded from this thing and are to be directed toward objects with which other personalities have not been so identified. So long as there are vacant lands to occupy, undeveloped regions awaiting the pioneer, unexploited natural resources awaiting the prospector—in short, so long as there are enough physical objects in reach, if one may so put it, to go round—this would be consistent with the nineteenth-century theory of justice. But when, as at the end of the nineteenth century, the world becomes crowded and its natural resources have been appropriated and exploited, so that there is a defect in material nature whereby such exercise of the will by some leaves no objects upon which the wills of others may be exerted, or a deficiency such as to prevent any substantial exertion of the will, it is difficult to see how Hegel's argument may be reconciled with the argument put behind the conception of res extra commercium. Miller, a Scotch Hegelian, seeks to meet this difficulty. He says that beyond what is needed for the natural existence and development of the person, property "can only be held as a trust for the state." In modern times, however, a periodical redistribution, as in antiquity, is economically inadmissible. Yet if anyone's holdings were to exceed the bounds of reason, "the legislature would undoubtedly interfere on behalf of society and prevent the wrong which would be done by caricaturing an abstract right." In view of our bills of rights, an American Hegelian could not invoke the deus ex machina of an Act of Parliament so conveniently. Perhaps he would fall back on graduated taxation and inheritance taxes. But does not Miller when hard pressed resort to something very like social-utilitarianism?
Lorimer connects the metaphysical theory with theories resting on human nature. To begin with, he deduces the whole system of property from a fundamental proposition that "the right to be and to continue to be implies a right to the conditions of existence." Accordingly he says that the idea of property is inseparably connected "not only with the life of man but with organic existence in general"; that "life confers rights to its exercise corresponding in extent to the powers of which it consists." When, however, this is applied in explaining the basis of the present proprietary system in all its details resort must be had to a type of artificial reasoning similar to that employed by the jurists of the seventeenth and eighteenth centuries. The abstract idea of ownership is not the only thing the legal philosopher has to consider. Moreover the reasoning by which that application is made may not be reconciled with the arguments by which the doctrine of res extra commercium is regarded also as a bit of natural law.
Although it purports to be wholly different, the positive theory of the basis of property is essentially the same as the metaphysical. Thus Spencer's theory is a deduction from a fundamental "law of equal freedom" verified by observation of the facts of primitive society. But the "law of equal freedom" supposed to be ascertained by observation, in the same way in which physical or chemical laws are ascertained, is in fact, as has often been pointed out, Kant's formula of justice. And the verification of deductions from this law by observation of the facts of primitive civilization is not essentially different from the verification of the deductions from the metaphysical fundamental law carried on by the historical jurists. The metaphysical jurist reached a principle metaphysically and deduced property therefrom. The historical jurist thereupon verified the deduction by showing the same principle as the idea realizing itself in legal history. In the hands of the positivists the same principle is reached by observation, the same deduction is made therefrom, and the deduction is verified by finding the institution latent in primitive society and unfolding with the development of civilization. The most notable difference is that the metaphysical and historical jurists rely chiefly on primitive occupation of ownerless things, while the positivists have been inclined to lay stress upon creation of new things by labor. In any event, laying aside the verification for the moment, the deduction as made by Spencer involves the same difficulties as those involved in the metaphysical deduction. Moreover, like the metaphysical deduction, it accounts for an abstract idea of private property rather than for the regime that actually exists. Inequalities are assumed to be due to "greater strength, greater ingenuity or greater application" of those who have acquired more than their fellows. Hence, as the end of law is taken to be the bringing about of a maximum of individual free self-assertion, any interference with one's holding the fruits of his greater strength or greater ingenuity or greater application, and his resulting greater activity in creative or acquisitive self-assertion, would contravene the very purpose of the legal order. It will be noted also that this theory, like all that had gone before, assumes a complete ius disponendi as implied in the very notion of property. But does not this also require demonstration? Is the ius disponendi implied in the idea which they demonstrate or is it only an incident of the institution they are seeking to explain by the demonstration?
Historical jurists have maintained their theory on the basis of two propositions: (1) The conception of private property, like the conception of individual personality, has had slow but steady development from the beginnings of law; (2) individual ownership has grown out of group rights just as individual interests of personality have been disentangled gradually from group interests. Let us look at each of these propositions in some detail.
If we examine the law of property analytically, we may see three grades or stages in the power or capacity which men have of influencing the acts of others with respect to corporeal objects. One is a mere condition of fact, a mere physical holding of or physical control over the thing without any other element whatever. The Roman jurists called this natural possession. We call it custody. Writers on analytical jurisprudence regard it as an element of possession. But this natural possession is something that may exist independently of law or of the state, as in the so-called pedis possessio of American mining law, where, before law or state authority had been extended to the public domain in the mining country, the miners recognized the claim of one who was actually digging to dig without molestation at that spot. The mere having of an object in one's actual grasp gives an advantage. But it may be only an advantage depending on one's strength or on recognition of and respect for his personality by his fellow men. It is not a legal advantage except as the law protects personality. It is the physical person of the one in natural possession which is secured, not his relation to the thing held. Analytically the next grade or stage is what the Romanist calls juristic possession as distinguished from natural possession. This is a legal development of the extra-legal idea of custody. Where custody or the ability to reproduce a condition of custody is coupled with the mental element of intention to hold for one's own purposes, the legal order confers on one who so holds a capacity protected and maintained by law so to hold, and a claim to have the thing restored to his immediate physical control should he be deprived of it. As the Romanist puts it, in the case of natural possession the law secures the relation of the physical person to the object; in juristic possession the law secures the relation of the will to the object. In the highest grade of proprietary relation, ownership, the law goes much further and secures to men the exclusive or ultimate enjoyment or control of objects far beyond their capacity either to hold in custody or to possess—that is, beyond what they could hold by physical force and beyond what they could actually hold even by the help of the state. Natural possession is a conception of pure fact in no degree dependent upon law. The legally significant thing is the interest of the natural possessor in his personality. Possession or juristic possession is a conception of fact and law, existing as a pure relation of fact, independent of legal origin, but protected and maintained by law without regard to interference with personality. Ownership is a purely legal conception having its origin in and depending on the law.
In general the historical development of the law of property follows the line thus indicated by analysis. In the most primitive social control only natural possession is recognized and interference with natural possession is not distinguished from interference with the person or injury to the honor of the one whose physical contact with the physical object is meddled with. In the earlier legal social control the all-important thing is seisin, or possession. This is a juristic possession, a conception both of fact and of law. Such institutions as tortious conveyance by the person seised in the common law are numerous in an early stage of legal development. They show that primarily the law protected the relation to an object of one who had possession of it. Indeed the idea of dominium, or ownership as we now understand it, was first worked out thoroughly in Roman law, and other systems got their idea of it, as distinguished from seisin, from the Roman books.
Recognition of individual interests of substance, or in other words individual property, has developed out of recognition of group interests, just as recognition of individual interests of personality has evolved gradually from what in the first instance was a recognition of group interests. The statement which used to be found in the books that all property originally was owned in common means nothing more than this: When interests of substance are first secured they are interests of groups of kindred because in tribally organized society groups of kindred are the legal units. Social control secures these groups in the occupation of things which they have reduced to their possession. In this sense the first property is group property rather than individual property. Yet it must be noted that wherever we find a securing of group interests, the group in occupation is secured against interference of other groups with that occupation. Two ideas gradually operated to break up these group interests and bring about recognition of individual interests. One of these is the partition of households. The other is the idea of what in the Hindu law is called self-acquired property.
In primitive or archaic society as households grow unwieldy there is a partition which involves partition of property as well as of the household. Indeed in Hindu law partition is thought of as partition of the household primarily and as partition of property only incidentally. Also in Roman law the old action for partition is called the action for partitioning the household. Thus, at first, partition is a splitting up of an overgrown household into smaller households. Presently, however, it tends to become a division of a household among individuals. Thus in Roman law on the death of the head of a household each of his sons in his power at his death became a pater familias and could bring a proceeding to partition the inheritance although he might be the sole member of the household of which he was the head. In this way individual ownership became the normal condition instead of household ownership. In Hindu law household ownership is still regarded as the normal condition. But with changes in society and the rise of commercial and industrial activity, a change has been taking place rapidly which is making individual ownership the normal type in fact, if not in legal theory.
Self-acquired property, the second disintegrating agency, may be seen in Hindu law and also in Roman law. In Hindu law all property is normally and prima facie household property. The burden is upon anyone who claims to be the individual owner of anything. But an exceptional class of property is recognized which is called self-acquired property. Such property might be acquired by "valor," that is, by leaving the household and going into military service and thus earning or acquiring by way of booty, or by "learning," that is, by withdrawing from the household and devoting oneself to study and thus acquiring through the gifts of the pious or the exercise of knowledge. A third form was recognized later, namely, property acquired through the use of self-acquired property. In the same way in Roman law the son in the household, even if of full age, normally had no property. Legally all property acquired by any member of the household was the property of the head of the household as the legal symbol and representative thereof. Later the head of the household ceases to be thought of as symbolizing the household and the property was regarded legally as his individual property. But Roman law recognized certain kinds of property which sons in the household might hold as their own. The first of these was property earned or acquired by the son in military service. Later property earned in the service of the state was added. Finally it came to be law that property acquired otherwise than through use of the patrimony of the household might be held by the son individually though he remained legally under the power of the head.
In the two ways just explained, through partition and through the idea of self-acquired property, individual interests in property came to be recognized throughout the law. Except for the institution of community property between husband and wife in civil-law countries, or as it is called the matrimonial property regime, there is practically nothing left of the old system of recognized group interests. And even this remnant of household group ownership is dissolving. All legally recognized interests of substance in developed legal systems are normally individual interests. To the historical jurist of the nineteenth century, this fact, coupled with the development of ownership out of possession, served to show us the idea which was realizing in human experience of the administration of justice and to confirm the position reached by the metaphysical jurists. Individual private property was a corollary of liberty and hence law was not thinkable without it. Even if we do not adopt the metaphysical part of this argument and if we give over the idealistic-political interpretation of legal history which it involves, there is much which is attractive in the theory of the historical jurists of the last century. Yet as we look at certain movements in the law there are things to give us pause. For one thing, the rise and growth of ideas of "negotiability," the development of the maxim possession vaut titre in Continental law, and the cutting down in other ways of the sphere of recognition of the interest of the owner in view of the exigencies of the social interest in the security of transactions, suggests that the tendency involved in the first of the two propositions relied on by the historical school has passed its meridian. The Roman doctrine that no one may transfer a greater title than he has is continually giving way before the demand for securing of business transactions had in good faith. And in Roman law in its maturity the rules that restricted acquisition by adverse possession and enabled the owner in many cases to reclaim after any lapse of time were superseded by a decisive limitation of actions which cut off all claims. The modern law in countries which take their law from Rome has developed this decisive limitation. Likewise in our law the hostility to the statute of limitations, so marked in eighteenth-century decisions, has given way to a policy of upholding it. Moreover the rapid rise in recent times of limitations upon the ius disponendi, the imposition of restrictions in order to secure the social interest in the conservation of natural resources, and English projects for cutting off the ius abutendi of the landowner, could be interpreted by the nineteenth-century historical jurists only as marking a retrograde development. When we add that with the increase in number and influence of groups in the highly organized society of today a tendency is manifest to recognize practically and in back-handed ways group property in what are not legal entities, it becomes evident that the segment of experience at which the historical jurists were looking was far too short to justify a dogmatic conclusion, even admitting the validity of their method.