Farther, in the year 529, seven philosophers of the Neo-Platonic school, who had been driven away from Athens, found a place of refuge at the court of Khosrau. Their experiences there, however, may have resembled those of the French free-thinkers of the 18th century at the Russian court. At all events they longed to get home again; and the king was sufficiently liberal-minded and magnanimous to allow them to go, and in his treaty of peace with Byzantium of the year 549 to stipulate in their case for freedom of religious opinion. Their stay in the Persian kingdom was doubtless not wholly devoid of influence. 6. The period of Syriac translations of profane literature from the Greek extends perhaps from the 4th to the 8th century. In the 4th century collections of aphorisms were translated. The first translator, however, who makes his appearance avowing his name, is Probus, “Priest and physician in Antioch” (1st half of the 5th century?). Possibly he was merely an expounder of the logical writings of Aristotle, and of the Isagoge of Porphyry. Better known is Sergius of Rasain,—who died at the age of 70 or so, probably in Constantinople, about 536,—a Mesopotamian monk and physician, whose studies, which were probably pursued in Alexandria itself, took in the whole range of Alexandrian science, and whose translations not only embraced Theology, Morals and Mysticism, but even Physics, Medicine and Philosophy. Even after the Muslim conquest the learned activity of the Syrians continued. Jacob of Edessa (circa 640–708) translated Greek theological writings; but he occupied himself besides with Philosophy, and in answer to a question relative thereto he pronounced that it was lawful for Christian ecclesiastics to impart the higher instruction to children of Muslim parents. There was thus a felt need of culture among the latter. The translations of the Syrians, particularly of Sergius of Rasain, are generally faithful; but a more exact correspondence with the original is shewn in the case of Logic and Natural Science than in Ethical and Metaphysical works. Much that is obscure in these last has been misunderstood or simply omitted, and much that is pagan has been replaced by Christian material. For instance, Peter, Paul and John would come upon the scene in room of Socrates, Plato and Aristotle. Destiny and the Gods were obliged to give place to the one God; and ideas like World, Eternity, Sin and the like were recast in a Christian mould. The Arabs, however, in subsequent times went to a much greater length with the process of adaptation to their language, culture and religion than the Syrians. This may perhaps be partly explained by the Muslim horror of everything heathen, but partly too by their greater faculty of adaptation.