About 1070 Rashi founded a school at Troyes, which soon became the centre [center sic] of instruction in the Talmud for the whole region. As we have seen, Gershom trained a number of disciples who directed schools, each of which pursued a particular course. Rashi united these various tendencies, as, later, his work put an end to the activity of the commentators of the Talmud. An explanation is thus afforded of the legend repeated by Basnage in these words: "He made a collection of the difficulties he had heard decided during his travels. On his return to Europe he went to all the academies and disputed with the professors about the questions which they were discussing; then he threw to the floor a page of his collections, which gave a solution of the problem, and so ended the controversy, without, however, mentioning the name of the author of the decision. It is alleged that these leaves scattered in thousands of places were gathered together, and that from them was composed the commentary on the Talmud." The legend attests Rashi's great reputation. While he was still quite young, his renown had rapidly spread. When in Lorraine, he had from time to time paid a visit to Troyes, and so, later, when definitely established in Champagne, he maintained relations with his masters, especially with Isaac ha-Levi, whom he visited and with whom he corresponded in the interim of his visits. Isaac ha-Levi was no less fond of his favorite pupil, and he inquired of travellers [travelers sic] about him. He addressed Responsa to Rashi on questions of Talmudic jurisprudence. In fact, Rashi continued to solicit advice from his teachers and keep himself informed of everything concerning schools and Talmudic instruction. In this way he once learned that a Talmudic scholar of Rome, R. Kalonymos (ben Sabbatai, born before 1030) had come after the death of Jacob ben Yakar to establish himself at Worms, where he died, probably a martyr's death, during the First Crusade. Kalonymos, who enjoyed a great reputation, wrote Talmudic commentaries and liturgical poems. His was a personality rare in that period.