The State has one purpose which is on the whole good, namely, the substitution of law for force in the relations of men. But this purpose can only be fully achieved by a world-State, without which international relations cannot be made subject to law. And although law is better than force, law is still not the best way of settling disputes. Law is too static, too much on the side of what is decaying, too little on the side of what is growing. So long as law is in theory supreme, it will have to be tempered, from time to time, by internal revolution and external war. These can only be prevented by perpetual readiness to alter the law in accordance with the present balance of forces. If this is not done, the motives for appealing to force will sooner or later become irresistible. A world-State or federation of States, if it is to be successful, will have to decide questions, not by the legal maxims which would be applied by the Hague tribunal, but as far as possible in the same sense in which they would be decided by war. The function of authority should be to render the appeal to force unnecessary, not to give decisions contrary to those which would be reached by force. This view may be thought by some to be immoral. It may be said that the object of civilization should be to secure justice, not to give the victory to the strong. But when this antithesis is allowed to pass, it is forgotten that love of justice may itself set force in motion. A Legislature which wishes to decide an issue in the same way as it would be decided if there were an appeal to force will necessarily take account of justice, provided justice is so flagrantly on one side that disinterested parties are willing to take up the quarrel. If a strong man assaults a weak man in the streets of London, the balance of force is on the side of the weak man, because, even if the police did not appear, casual passers-by would step in to defend him. It is sheer cant to speak of a contest of might against right, and at the same time to hope for a victory of the right. If the contest is really between might and right, that _means_ that right will be beaten. What is obscurely intended, when this phrase is used, is that the stronger side is only rendered stronger by men’s sense of right. But men’s sense of right is very subjective, and is only one factor in deciding the preponderance of force. What is desirable in a Legislature is, not that it should decide by its personal sense of right, but that it should decide in a way which is felt to make an appeal to force unnecessary. Having considered what the State ought not to do, I come now to what it ought to do. Apart from war and the preservation of internal order, there are certain more positive functions which the State performs, and certain others which it ought to perform. We may lay down two principles as regards these positive functions.