And what were their qualifications to grapple with such a subject? Learning had been almost exclusively the property of the Church, and although from its fold many able writers and profound thinkers had been evolved, yet the teachings of science and the speculations of philosophy were ever held subordinate to the holy scriptures. Now and then it is true some gleams of important truth would flash up in the writings of some philosopher disconnected with the religious orders illuminating the path of intellectual progress, but such writings seldom made any permanent impress upon the literature of the age. It is to the priesthood almost exclusively we have to look for any advancement for many centuries in literature, science, and art. The universally adopted view of the structure of the universe was geocentric, of the world, anthropocentric. To explain such ordinary phenomena as that of day and night, preposterous schemes were invented, like that of Cosmas Indicopleustes, who asserted that in the northern parts of the flat earth there is an immense mountain, behind which the sun passes and thus produces night.[I-1] Any assertion that seemed to clash with preconceived notions of the teachings of holy writ or the writings of the fathers was looked upon with doubt and disfavor. Indeed the bible was regarded as the all-sufficient manual of science, containing all that was necessary to be known, and to inquire further was thought to be prying into the secret things of the most high.[I-2] The learning of the masses consisted not in the acquisition of knowledge, but in the blind and meaningless repetition of prescribed maxims, in forms of rhetoric, in anything except that which would enlighten the mind and impart true wisdom; it was, in short, a systematic course of leading men as far as possible away from the known, and leaving them lost and bewildered in a labyrinth of uncertainty and doubt.[I-3] [Sidenote: SCIENCE IN THE MIDDLE AGES.] When, therefore, the questions arose, whence were these new lands peopled? how came these strange animals and plants to exist on a continent cut off by vast oceans from the rest of the world? the wise men of the time unhesitatingly turned to the sacred scriptures for an answer. These left them no course but to believe that all mankind were descended from one pair. This was a premise that must by no means be disputed. The original home of the first pair was generally supposed to have been situated in Asia Minor; the ancestors of the people found in the New World must consequently have originally come from the Old World, though at what time and by what route was an open question, an answer to which was diligently sought for both in the sacred prophecies and in the historical writings of antiquity.[I-4]