Before we determine the surety given by nature more exactly, we must first look at what ultimately makes this guarantee of peace necessary—the circumstances in which nature has carefully placed the actors in her great theatre. In the next place, we shall proceed to consider the manner in which she gives this surety. The provisions she has made are as follow: (1) she has taken care that men _can_ live in all parts of the world; (2) she has scattered them by means of war in all directions, even into the most inhospitable regions, so that these too might be populated; (3) by this very means she has forced them to enter into relations more or less controlled by law. It is surely wonderful that, on the cold wastes round the Arctic Ocean, there is always to be found moss for the reindeer to scrape out from under the snow, the reindeer itself either serving as food or to draw the sledge of the Ostiak or Samoyedes. And salt deserts which would otherwise be left unutilised have the camel, which seems as if created for travelling in such lands. This evidence of design in things, however, is still more clear when we come to know that, besides the fur-clad animals of the shores of the Arctic Ocean, there are seals, walruses and whales whose flesh furnishes food and whose oil fire for the dwellers in these regions. But the providential care of nature excites our wonder above all, when we hear of the driftwood which is carried—whence no one knows—to these treeless shores: for without the aid of this material the natives could neither construct their craft, nor weapons, nor huts for shelter. Here too they have so much to do, making war against wild animals, that they live at peace with one another. But what drove them originally into these regions was probably nothing but war. Of animals, used by us as instruments of war, the horse was the first which man learned to tame and domesticate during the period of the peopling of the earth; the elephant belongs to the later period of the luxury of states already established. In the same way, the art of cultivating certain grasses called cereals—no longer known to us in their original form—and also the multiplication and improvement, by transplanting and grafting, of the original kinds of fruit—in Europe, probably only two species, the crab-apple and wild pear—could only originate under the conditions accompanying established states where the rights of property are assured. That is to say it would be after man, hitherto existing in lawless liberty, had advanced beyond the occupations of a hunter,[138] a fisherman or a shepherd to the life of a tiller of the soil, when salt and iron were discovered,—to become, perhaps, the first articles of commerce between different peoples,—and were sought far and near. In this way the peoples would be at first brought into peaceful relation with one another, and so come to an understanding and the enjoyment of friendly intercourse, even with their most distant neighbours.