The golden age of letters was followed by a less creative period, a significant turning-point in the history of Judaism as of spiritual progress in general. The contest between tradition and philosophy affected every mind. Literature was widely cultivated; each of its departments found devotees. The European languages were studied, and connections established between the literatures of the nations. Hardly a spiritual current runs through the middle ages without, in some way, affecting Jewish culture. It is the irony of history that puts among the forty proscribers of the Talmud assembled at Paris in the thirteenth century the Dominican Albertus Magnus, who, in his successful efforts to divert scholastic philosophy into new channels, depended entirely upon the writings and translations of the very Jews he was helping to persecute. Schoolmen were too little conversant with Greek to read Aristotle in the original, and so had to content themselves with accepting the Judæo-Arabic construction put upon the Greek sage's teachings. Besides acting as intermediaries, Jews made original contributions to scholastic philosophy. For instance, Maimonides, the first to reconcile Aristotle's teachings with biblical theology, was the originator of the method adopted by schoolmen in the case of Aristotelian principles at variance with their dogmas. Frederick II., the liberal emperor, employed Jewish scholars and translators at his court; among them Jacob ben Abba-Mari ben Anatoli, to whom an annuity was paid for translating Aristotelian works. Michael Scotus, the imperial astrologer, was his intimate friend. His contemporaries were chiefly popular philosophers or mystics, excepting only the prominent Provençal Jacob ben Machir, or Profatius Judæus, as he was called, a member of the Tibbon family of translators. His observations on the inclination of the earth's axis were used later by Copernicus as the basis of further investigations. He was a famous teacher at the Montpellier academy, which reminds me to mention that Jews were prominently identified with the founding and the success of the medical schools at Montpellier and Salerno, they, indeed, being almost the only physicians in all parts of the known world. Salerno, in turn, suggests Italy, where at that period translations were made from Latin into Hebrew. Hillel ben Samuel, for instance, the same who carried on a lively philosophic correspondence with another distinguished Jew, Maestro Isaac Gayo, the pope's physician, translated some of Thomas Aquinas's writings, Bruno di Lungoburgo's book on surgery, and various other works, from Latin into Hebrew.