These centuries include the second period of their academic history. Their authority is now hardly questioned; and woe to the questioner! They furnish the basis for the great structure of scholastic philosophy; they are reconciled with Christian doctrine. Aristotle is thenceforward "The Philosopher"--he is so styled even in modern scholastic philosophy; he is "the forerunner of Christ in things natural," "the master of those who know." In this period, then, academic debate concerned itself with matters of detail. What portions of his works should be studied for the various degrees in Arts? In what order should they be studied? What comments should be read? What translations should be used? So late as 1519 these are the chief questions considered in the reformed plan of studies in Arts at Leipzig. The reader will note the stress laid upon the study of the text itself; the exclusion of frivolous comments, and the use of the latest translations by Greek scholars. Inasmuch as no good thing is more desirable than philosophy, as Cicero says, and none more advantageous has been given to the race of mortals, or granted by heaven, or will ever be given as a gift; in order that we may possess this too, we choose as our guide Aristotle, whom we cause to be commended for his knowledge of facts, the number of his works, his ability in speaking, and the acumen of his intellectual powers. Nor will we interpret the visions and involved questions of his interpreters, since it is characteristic of a very poor intellect to grow wise from commentaries only, in which, neglecting Aristotle's meaning, the Sophists dispute about empty trifles. But his works, translated in part by Archeropylus [Argyropulos], in part by Augustus Nipho and Hermolaus Barbarus and Theodoras Gaza, will be made clear in the order outlined below:[24] [Then follows the list of books, for which see p. 134]. The third stage of the debate concerning Aristotle began shortly after 1500. His works were less exclusively the subject of study: they were being displaced by the Latin and Greek classics. They were, moreover, the object of repeated attack. In 1536, in the University of Paris, which had so long maintained their study, Pierre Ramus successfully defended the startling thesis, "Everything that Aristotle taught is false." This was only one sign of their loss of prestige. New and improved text-books in Logic absorbed the useful portions of the Organon; the authority of the Natural Philosophy waned with the rise of experimental science; that of the Metaphysics yielded to the new philosophy of Descartes. By the end of the seventeenth century they ceased to be a potent factor in university studies. (b) _The Roman Law_