Sect. XThe right of conquest may be considered as a third source of the title of sovereigns. This right resembles very much that of present possession; but has rather a superior force, being seconded by the notions of glory and honour, which we ascribe to conquerors, instead of the sentiments of hatred and detestation, which attend usurpers. Men naturally favour those they love; and therefore are more apt to ascribe a right to successful violence, betwixt one sovereign and another, than to the successful rebellion of a subject against his sovereign.[11]

[11] It is not here asserted, that present possession or conquest are sufficient to give a title against long possession and positive laws but only that they have some force, and will be able to call the ballance where the titles are otherwise equal, and will even be sufficient sometimes to sanctify the weaker title. What degree of force they have is difficult to determine. I believe all moderate men will allow, that they have great force in all disputes concerning the rights of princes.

When neither long possession, nor present possession, nor conquest take place, as when the first sovereign, who founded any monarchy, dies; in that case, the right of succession naturally prevails in their stead, and men are commonly induced to place the son of their late monarch on the throne, and suppose him to inherit his father's authority. The presumed consent of the father, the imitation of the succession to private families, the interest, which the state has in chusing the person, who is most powerful, and has the most numerous followers; all these reasons lead men to prefer the son of their late monarch to any other person.[12]

[12] To prevent mistakes I must observe, that this case of succession is not the same with that of hereditary monarchies, where custom has fix'd the right of succession. These depend upon the principle of long possession above explain'd.

These reasons have some weight; but I am persuaded, that to one, who considers impartially of the matter, it will appear, that there concur some principles of the imagination, along with those views of interest. The royal authority seems to be connected with the young prince even in his father's life-time, by the natural transition of the thought; and still more after his death: So that nothing is more natural than to compleat this union by a new relation, and by putting him actually in possession of what seems so naturally to belong to him.

To confirm this we may weigh the following phaenomena, which are pretty curious in their kind. In elective monarchies the right of succession has no place by the laws and settled custom; and yet its influence is so natural, that it is impossible entirely to exclude it from the imagination, and render the subjects indifferent to the son of their deceased monarch. Hence in some governments of this kind, the choice commonly falls on one or other of the royal family; and in some governments they are all excluded. Those contrary phaenomena proceed from the same principle. Where the royal family is excluded, it is from a refinement in politics, which makes people sensible of their propensity to chuse a sovereign in that family, and gives them a jealousy of their liberty, lest their new monarch, aided by this propensity, should establish his family, and destroy the freedom of elections for the future.

The history of Artaxerxes, and the younger Cyrus, may furnish us with some reflections to the same purpose. Cyrus pretended a right to the throne above his elder brother, because he was born after his father's accession. I do not pretend, that this reason was valid. I would only infer from it, that he would never have made use of such a pretext, were it not for the qualities of the imagination above-mentioned, by which we are naturally inclined to unite by a new relation whatever objects we find already united. Artaxerxes had an advantage above his brother, as being the eldest son, and the first in succession: But Cyrus was more closely related to the royal authority, as being begot after his father was invested with it.

Should it here be pretended, that the view of convenience may be the source of all the right of succession, and that men gladly take advantage of any rule, by which they can fix the successor of their late sovereign, and prevent that anarchy and confusion, which attends all new elections? To this I would answer, that I readily allow, that this motive may contribute something to the effect; but at the same time I assert, that without another principle, it is impossible such a motive should take place. The interest of a nation requires, that the succession to the crown should be fixed one way or other; but it is the same thing to its interest in what way it be fixed: So that if the relation of blood had not an effect independent of public interest, it would never have been regarded, without a positive law; and it would have been impossible, that so many positive laws of different nations could ever have concured precisely in the same views and intentions.

This leads us to consider the fifth source of authority, viz. positive laws; when the legislature establishes a certain form of government and succession of princes. At first sight it may be thought, that this must resolve into some of the preceding titles of authority. The legislative power, whence the positive law is derived, must either be established by original contract, long possession, present possession, conquest, or succession; and consequently the positive law must derive its force from some of those principles. But here it is remarkable, that though a positive law can only derive its force from these principles, yet it acquires not all the force of the principle from whence it is derived, but loses considerably in the transition; as it is natural to imagine. For instance; a government is established for many centuries on a certain system of laws, forms, and methods of succession. The legislative power, established by this long succession, changes all on a sudden the whole system of government, and introduces a new constitution in its stead. I believe few of the subjects will think themselves bound to comply with this alteration, unless it have an evident tendency to the public good: But men think themselves still at liberty to return to the antient government. Hence the notion of fundamental laws; which are supposed to be inalterable by the will of the sovereign: And of this nature the Salic law is understood to be in France. How far these fundamental laws extend is not determined in any government; nor is it possible it ever should. There is such an indefensible gradation from the most material laws to the most trivial, and from the most ancient laws to the most modern, that it will be impossible to set bounds to the legislative power, and determine how far it may innovate in the principles of government. That is the work more of imagination and passion than of reason.

Whoever considers the history of the several nations of the world; their revolutions, conquests, increase, and diminution; the manner in which their particular governments are established, and the successive right transmitted from one person to another, will soon learn to treat very lightly all disputes concerning the rights of princes, and will be convinced, that a strict adherence to any general rules, and the rigid loyalty to particular persons and families, on which some people set so high a value, are virtues that hold less of reason, than of bigotry and superstition. In this particular, the study of history confirms the reasonings of true philosophy; which, shewing us the original qualities of human nature, teaches us to regard the controversies in politics as incapable of any decision in most cases, and as entirely subordinate to the interests of peace and liberty. Where the public good does not evidently demand a change; it is certain, that the concurrence of all those titles, original contract, long possession, present possession, succession, and positive laws, forms the strongest title to sovereignty, and is justly regarded as sacred and inviolable. But when these titles are mingled and opposed in different degrees, they often occasion perplexity; and are less capable of solution from the arguments of lawyers and philosophers, than from the swords of the soldiery. Who shall tell me, for instance, whether Germanicus, or Drufus, ought to have succeeded Tiberius, had he died while they were both alive, without naming any of them for his successor? Ought the right of adoption to be received as equivalent to that of blood in a nation, where it had the same effect in private families, and had already, in two instances, taken place in the public? Ought Germanicus to be esteemed the eldest son, because he was born before Drufus; or the younger, because he was adopted after the birth of his brother? Ought the right of the elder to be regarded in a nation, where the eldest brother had no advantage in the succession to private families? Ought the Roman empire at that time to be esteemed hereditary, because of two examples; or ought it, even so early, to be regarded as belonging to the stronger, or the present possessor, as being founded on so recent an usurpation? Upon whatever principles we may pretend to answer these and such like questions, I am afraid we shall never be able to satisfy an impartial enquirer, who adopts no party in political controversies, and will be satisfied with nothing but sound reason and philosophy.