This fact raises anew the question of how it was that nature and man were later separated and a sharp division made between language and literature and the physical sciences. Four reasons may be suggested. (a) The old tradition was firmly entrenched in institutions. Politics, law, and diplomacy remained of necessity branches of authoritative literature, for the social sciences did not develop until the methods of the sciences of physics and chemistry, to say nothing of biology, were much further advanced. The same is largely true of history. Moreover, the methods used for effective teaching of the languages were well developed; the inertia of academic custom was on their side. Just as the new interest in literature, especially Greek, had not been allowed at first to find lodgment in the scholastically organized universities, so when it found its way into them it joined hands with the older learning to minimize the influence of experimental science. The men who taught were rarely trained in science; the men who were scientifically competent worked in private laboratories and through the medium of academies which promoted research, but which were not organized as teaching bodies. Finally, the aristocratic tradition which looked down upon material things and upon the senses and the hands was still mighty. (b) The Protestant revolt brought with it an immense increase of interest in theological discussion and controversies. The appeal on both sides was to literary documents. Each side had to train men in ability to study and expound the records which were relied upon. The demand for training men who could defend the chosen faith against the other side, who were able to propagandize and to prevent the encroachments of the other side, was such that it is not too much to say that by the middle of the seventeenth century the linguistic training of gymnasia and universities had been captured by the revived theological interest, and used as a tool of religious education and ecclesiastical controversy. Thus the educational descent of the languages as they are found in education to-day is not direct from the revival of learning, but from its adaptation to theological ends.