Upon this Pfefferkorn and the Dominicans again applied to the Emperor, got a second mandate, then a third, which was the important one. It left the matter in the hands of the Archbishop of Mainz, who was to collect evidence on the subject of Jewish books. He was to ask the opinions of Reuchlin, of Victor von Karben (1422-1515), who had been a Jew but was then a Christian priest, of James Hochstratten (1460-1527), a Dominican and Inquisitor to the diocese of Köln, a strong foe to Humanism, and of the Universities of Heidelberg, Erfurt, Köln, and Mainz. They were to write out their opinions and send them to Pfefferkorn, who was to present them to the Emperor. Reuchlin was accordingly asked by the Archbishop to advise the Emperor “whether it would be praiseworthy and beneficial to our holy religion to destroy such books as the Jews used, excepting only the books of the Ten Commandments of Moses, the Prophets, and the Psalter of the Old Testament?” Reuchlin’s answer was ready by November 1510. He went into the matter very thoroughly and impartially. He divided the books of the Jews into several classes, and gave his opinion on each. It was out of the question to destroy the Old Testament. The Talmud was a collection of expositions of the Jewish law at various periods; no one could express an opinion about it unless he had read it through; Reuchlin had only been able to procure portions; judging from these, it was likely that the book did contain many things contrary to Christianity, but that was the nature of the Jewish religion which was protected by law; it did contain many good things, and ought not to be destroyed. The Cabala was, according to Reuchlin, a very precious book, which assured us as no other did of the divinity of Christ, and ought to be carefully preserved. The Jews had various commentaries on the books of the Old Testament which were very useful to enable Christian scholars to understand them rightly, and they ought not to be destroyed. They had also sermons and ceremonial books belonging to their religion which had been guaranteed by imperial law. They had books on arts and sciences which ought to be destroyed only in so far as they taught such forbidden arts as magic. Lastly, there were books of poetry and fables, and some of them might contain insults to Christ, the Virgin, and the Apostles, and might deserve burning, but not without careful and competent examination. He added that the best way to deal with the Jews was not to burn their books, but to engage in reasonable, gentle, and kindly discussion. Reuchlin’s opinion stood alone: all the other authorities suggested the burning of Jewish books, and the University of Mainz would not exempt the Old Testament until it had been shown that it had not been tampered with by Jewish zealots.