special gods that are soon separated from objects and almost transformed at once into substantial personages, the sentiment of universal unity nearly effaced and scarcely maintained in the vague notion of destiny, a philosophy, rather than subtle and compact, grandiose and systematic, narrow metaphysically[5] but incomparable in its logic, sophistry, and morality, a poesy and arts superior to anything we have seen in lucidity, naturalness, proportion, truth, and beauty.  If, finally, man is reduced to narrow conceptions deprived of any speculative subtlety, and at the same time finds that he is absorbed and completely hardened by practical interests, we see, as in Rome, rudimentary deities, mere empty names, good for denoting the petty details of agriculture, generation, and the household, veritable marriage and farming labels, and, therefore, a null or borrowed mythology, philosophy, and poesy.  Here, as elsewhere, comes in the law of mutual dependencies.[6] A civilization is a living unit, the parts of which hold together the same as the parts of an organic body.  Just as in an animal, the instincts, teeth, limbs, bones, and muscular apparatus are bound together in such a way that a variation of one determines a corresponding variation in the others, and out of which a skillful naturalist, with a few bits, imagines and reconstructs an almost complete body, so, in a civilization, do religion, philosophy, the family scheme, literature and the arts form a system in which each local change involves a general change, so that an experienced historian, who studies one portion apart from the others, sees beforehand and partially predicts the characteristics of the rest.  There is nothing vague in this dependence.  The regulation of all this in the living body consists, first, of the tendency to manifest a certain primordial type, and, next, the necessity of its possessing organs which can supply its wants and put itself in harmony with itself in order to live.  The regulation in a civilization consists in the presence in each great human creation of an elementary productor equally present in other surrounding creations, that is, some faculty and aptitude, some efficient and marked disposition, which, with its own peculiar character, introduces this with that into all operations in which it takes part, and which, according to its variations, causes variation in all the works in which it cooeperates.

VII

Having reached this point we can obtain a glimpse of the principal features of human transformations, and can now search for the general laws which regulate not only events, but classes of events; not only this religion or that literature, but the whole group of religions or of literatures.  If, for example, it is admitted that a religion is a metaphysical poem associated with belief; if it is recognized, besides, that there are certain races and certain environments in which belief, poetic faculty, and metaphysical faculty