So, then, the change which has come over the scientific point of view between pre-Darwinian and post-Darwinian times is to be explained, at least in great part, by the changing circumstances of life, and therefore of habituation, among the people of Christendom during the life-history of modern science. But the growth of a scientific point of view begins farther back than modern Christendom, and a record of its growth would be a record of the growth of human culture. Modern science demands a genetic account of the phenomena with which it deals, and a genetic inquiry into the scientific point of view necessarily will have to make up its account with the earlier phases of cultural growth. A life-history of human culture is a large topic, not to be attempted here even in the sketchiest outline. The most that can be attempted is a hasty review of certain scattered questions and salient points in this life-history. * * * * * In what manner and with what effect the idle curiosity of mankind first began to tame the facts thrown in its way, far back in the night of time, and to break them in under a scheme of habitual interpretation; what may have been the earliest norms of systematic knowledge, such as would serve the curiosity of the earliest generations of men in a way analogous to the service rendered the curiosity of later generations by scientific inquiry--all that is, of course, a matter of long-range conjecture, more or less wild, which cannot be gone into here. But among such peoples of the lower cultures as have been consistently observed, norms of knowledge and schemes for its systematization are always found. These norms and systems of knowledge are naive and crude, perhaps, but there is fair ground for presuming that out of the like norms and systems in the remoter ages of our own antecedents have grown up the systems of knowledge cultivated by the peoples of history and by their representatives now living.