What has hitherto been said about the goods of the state can be applied by analogy also to the goods of other societies which do not constitute states.
6. Here, however, it must be further noted concerning the possessions of a state, that some are so appointed as to make it possible for their use (whether that use be of all kinds or only restricted) to be free promiscuously even to non-enemy outsiders, without detriment to that state. These are called things of innocent utilization, as are fountains of water, rivers, straits, seas, royal roads, &c. The faculty of conducting commerce with foreign nations includes the employment of these for the purpose of travel. Since generally the more civilized states grant promiscuously to non-enemy outsiders the use of these things, upon this fact some have based the claim that they are not subject to any proprietary right, moreover that the law of nature altogether forbids proprietorship in them, and enjoins that an unlimited use of the same should be granted to all men; and that therefore those are violating a law of nature who, claiming for themselves proprietorship in these things, have desired to put restriction upon their use by outsiders, or to shut them off entirely from such use.3 It is quite certain, however, that those who put forward this claim are in error. Moreover, as far as public roads are concerned, it is well established that the owners of a region can keep absolutely any outsider from passing through it, or else can refuse to grant passage except on a definite regulation, or a definite charge. For, inasmuch as no one would deny them the proprietorship over the region, a part of which consists of public roads, it is clear that the same persons have also the right of disposition regarding roads, and that therefore they have the right of interdicting to others the use of these roads, if, indeed, it appear to them that such an action is in their own interest. Although, as long as the use keeps within the limits of innocent utilization, that right should not be exercised, because of the common obligation of men toward one another, by which any person whatsoever is bound to relieve the needs of any other person whatsoever, as far as that may be done without injury to himself. And yet nothing but extreme necessity gives one the authority to assert a claim to the use of such a road by violence;4 since, on the other hand, if all had an equal right to the road, whoever was prohibited from the use of it on any cause whatsoever would have just cause for war. Thence it follows that Dido acted properly and within her rights when she refused the comrades of Aeneas a reception <26> to her shores until it was well established that from them there boded no evil to the new state.5 So it was no act of injustice when the Edomites refused the Children of Israel, who promised indemnity merely on their word, a passage through their country, on the not unfounded fear that the latter would be compelled by their toilsome wandering to choose the land of the Edomites themselves.6 The same Israelites, also, were not given just cause for making war against Sihon and Og, kings of the Amorites, by the refusal of a passage through the territory subject to these kings, but by the fact that Sihon and Og, beyond what was right, crossed their own boundaries with an army to meet them, and provoked the Israelites to battle.7 For here there is no need of taking refuge in an extraordinary command of God, as in those wars in which the same nation attacked the Canaanites. For these wars would otherwise have been most unjust, had not a special mandate of God authorized the Jews to destroy nations which, although they were exceedingly contaminated with sins, had nevertheless not called upon themselves the arms of the Jews by any injury which they had done the latter.8
7. But whether the sea also be subject to the claim of proprietorship has been ardently disputed by the most illustrious intellects in our generation, some saying that it is so subject, and others denying it.9 Yet one ought not to be regarded as having unjustly hurt the reputation of any of these men, if one say that each has had rather the advantage of his own state before his eyes, than the zeal for truth which is under obligation to no parties. We are of the opinion that this controversy can be settled clearly and firmly if we assume here (an assumption which will be developed at greater length a little later), that man’s ownership of things, so that it is rightful by a positive divine law, arises from that concession of God by which He made man the master of the whole earth. In this concession, which has the character of a privilege and not a command,10 since there is express mention quite as much of the fish of the sea as of the beasts of the field,11 whose ownership cannot be conceived unless at the same time there is the right to utilize the element which they inhabit as far as its nature admits—on this side, surely, there is nothing to prevent men from being able to claim for themselves dominion of the sea. That this same dominion is rightful by the law of nature results from the need and necessity of man, who, since he cannot maintain life without the utilization and consumption of other things, is recognized to have authority also to utilize and consume them. Seeing that the sea also is to some degree able to remedy that state of need, here also there will be nothing to prevent man from appropriating to himself any uses whatsoever of the sea that he can, after that he himself, a terrestrial animal, has learned to go to and fro upon an alien element. But that this pro-<27>prietorship be acquired in actuality and obtain its proper effects as much in due order toward the things themselves as toward other men, it is necessary that it be acquired in some way which is recognized among men, one, namely, which supposes or involves a pact by which other men are understood to have renounced their pretension to that thing. Whether, therefore, men wish to exercise proprietorship over the sea as they do over land, or, on the contrary, to regard it as derelict, the privilege of doing one thing or the other has been conceded to them by the law of nature and the law of God, and it has been placed within the range of their free choice. For the objections that have been raised to this conclusion, namely, that the sea is fluid, that it has capacity and is sufficient for the uses of all men, and that there is uncertainty as to its limits, pass for the most part into witticisms,12 and it has long ago been shown by others that such objections do not at all stand in the way of proprietorship. Also one should well observe that the effects of proprietorship show themselves clearly or obscurely in proportion to the measure in which the physical nature of the thing under consideration allows them to show themselves; and that proprietorship does not, nevertheless, immediately expire, although it may appear that the utilization of proprietorship can be less conveniently compassed, as it were, by some one individual.
Hence it is sufficient for the sea or any part of it to be called some one’s possession, if he has the right of so completely appropriating to himself the uses of it that, unless others are willing to recognize those same uses in the way of a benefaction of his own, he may be able with justice to keep them out; and this obtains even though the extent of the sea makes guarding and, as it were, exclusive possession of it difficult, and especially its superlative capacity for utilization makes such guarding and possession almost superfluous.