With the growth of civilization the human and the territorial unit become less and less identical. In a primitive community the members are undifferentiated from one another: the true human unit is the total group, and not the individual, and the territory this group occupies is a unit too, self-sufficing and cut off from intercourse with the next valley. In modern Europe every sub-group and every individual has developed a “character” or “individuality” of its own which must have free play; while the growth of communications, elaboration of organization, and economic interdependence of the whole world have broken down the barriers between region and region. The minimum territorial block that can be organized efficiently as a separate political unit according to modern standards is constantly growing in size: the maximum human group which can hold together without serious internal divergence is as steadily diminishing. This would look like an _impasse_, were it not corrected by the virtues of civilization itself. We started with the fact that the essence of civilization was “Forethought” and its ideal the “power of free choice”: the complementary side of this ideal, on the principle “Do as you would be done by,” is to allow free choice to others when they are in your power. It is a virtue with as many names as there are spheres of human life: “Forbearance,” “Toleration,” “Constitutionalism.”... _Arnold J. Toynbee, “Nationality and the War,” chap. I._ NATIONALITY AND SOVEREIGNTY [Sidenote: We must have new forms of guarantee.] The old Europe is dead, the old vision vanished, and we are wrestling in agony for new inspiration.... We must beware of putting our new wine into old bottles. While guarantees hold, they conserve their charge: when they break, the destruction is worse than if they had never existed. Unless we can ensure that the sovereign States of Europe respect European guarantees hereafter in other fashion than Germany at the present crisis, we must modify the formula or else discard it altogether. Can the mechanism of the European system be safeguarded against its individual members?... We have asked our question and must accept the answer. It is useless to fortify our new European organism by guarantees of the old order, because we cannot fortify such guarantees themselves against the sovereign national State. Whenever it chooses, the sovereign unit can shatter the international mechanism by war. We are powerless to prevent it: all we can do is to abandon our direct attack, and look for the causes which impel States to a choice as terrible for themselves as for their victims. [Sidenote: The German position.] “You ask,” the Germans say, “why we broke our contract towards Belgium? It would be more pertinent to ask how we were ever committed to such a contract at all.