...only in the late 1100s and 1200s did scholars in Sicily and Spain translate Aristotle's greatest philosophical and scientific texts. These translations had an impact reminiscent of those science fiction stories in which the world suddenly encounters a civilization far in advance of its own. Aristotle had systematically answered the widest range of questions on everything from ethics to physics to biology. Students flocked to the universities advertising that they taught Aristotle. For Christian theologians, all of this posed at least two problems. First, the whole Augustinian tradition had taught that faith provided the standpoint from which one could understand the world correctly. Since Aristotle had not been a Christian, how had he managed to understand so much? Second, most theologians had drawn on the idea, going back to Aristotle's teacher Plato, that the road to knowledge involves turning away from the senses and looking inward to the truths of the soul. Aristotle, on the other hand, taught that all knowledge begins with sense observation.