7. In fact, we would still have to ask ourselves for the cause of the events (in our world) even if the stars, like many other things, really prognosticated future events. We would still have to wonder at the maintenance of the order without which no events could be prefigured. We might, therefore, liken the stars to letters, at every moment flung along the heavens, and which, after having been displayed, continued in ceaseless motion, so that, while exercising another function in the universe, they would still possess significance.[212] Thus in a being animated by a single principle it is possible to judge one part by another; as it is possible, by the study of the eyes or some other organ of an individual, to conclude as to his characters, to the dangers to which he is exposed, and how he may escape them. Just as our members are parts of our bodies, so are we ourselves parts of the universe. Things, therefore, are made for each other. Everything is significant, and the wise man can conclude from one thing to another. Indeed many habitual occurrences are foreseen by men generally. In the universe everything is reduced to a single system.[213] To this co-ordination is due the possibility of birds furnishing us with omens, and other animals furnishing us with presages. All things mutually depend from each other. Everything conspires to a single purpose,[214] not only in each individual, whose parts are perfectly related; but also in the universe, and that in a higher degree, and far earlier. This multiple being could be turned into a single universal Living organism only by a single principle. As in the human body every organ has its individual function, likewise in the universe each being plays its individual part; so much the more that they not only form part of the universe, but that they themselves also form universes not without importance.[215] All things, therefore, proceed from a single principle, each plays its individual part, and lends each other mutual assistance. Neither are they separate from the universe, but they act and react on each other, each assisting or hindering the other. But their progress is not fortuitous, nor is it the result of chance. They form a series, where each, by a natural bond, is the effect of the preceding one, and the cause of the following one.[216] THERE IS A NATURAL LAW WHICH DIRECTS THE SOUL.