No doubt in ancient Babylonia, as in Europe during the Middle Ages, the men of refinement and intellect among the upper classes were attracted to the temples, while the more robust types preferred the outdoor life, and especially the life of the soldier.[302] The permanent triumphs of Babylonian civilization were achieved either by the priests, or in consequence of the influence they exercised. They were the grammarians and the scribes, the mathematicians and the philosophers of that ancient country, the teachers of the young, and the patrons of the arts and crafts. It was because the temples were centres of intellectual activity that the Sumerian language remained the language of culture for long centuries after it ceased to be the everyday speech of the people. Reference has already been made to the growth of art, and the probability that all the arts had their origin in magical practices, and to the growth of popular education necessitated by the centralization of business in the temples. It remains with us to deal now with priestly contributions to the more abstruse sciences. In India the ritualists among the Brahmans, who concerned themselves greatly regarding the exact construction and measurements of altars, gave the world algebra; the pyramid builders of Egypt, who erected vast tombs to protect royal mummies, had perforce to lay the groundwork of the science of geometry; and the Babylonian priests who elaborated the study of astrology became great astronomers because they found it necessary to observe and record accurately the movements of the heavenly bodies. From the earliest times of which we have knowledge, the religious beliefs of the Sumerians had vague stellar associations. But it does not follow that their myths were star myths to begin with. A people who called constellations "the ram", "the bull", "the lion", or "the scorpion", did not do so because astral groups suggested the forms of animals, but rather because the animals had an earlier connection with their religious life. At the same time it should be recognized that the mystery of the stars must ever have haunted the minds of primitive men. Night with all its terrors appealed more strongly to their imaginations than refulgent day when they felt more secure; they were concerned most regarding what they feared most. Brooding in darkness regarding their fate, they evidently associated the stars with the forces which influenced their lives--the ghosts of ancestors, of totems, the spirits that brought food or famine and controlled the seasons. As children see images in a fire, so they saw human life reflected in the starry sky. To the simple minds of early folks the great moon seemed to be the parent of the numerous twinkling and moving orbs. In Babylon, indeed, the moon was regarded as the father not only of the stars but of the sun also; there, as elsewhere, lunar worship was older than solar worship.