one bound the central topic of interest in _Karlsstrasse_. The orthodox partisans made advances to him, although he did not for a moment leave them in doubt about his disapproval of their program and his dissent from their religious views. He told them that he was pursuing his own original ideas, and that his guiding principle was unalterable loyalty to positive Judaism. However, he restrained them from many a foolish and fanatic step. In the face of orthodox opposition Geiger had energetically organized a religious school, which was prospering. Graetz therefore advised the adherents of orthodoxy not to permit themselves to lose touch with the younger generation, but to build up a similar institution on conservative lines. The advice seems to have fallen on fruitful soil. It was intimated to the counselor, that the intention was to entrust him with the organization and superintendence of a school of that kind, provided he obtained his University degree before its opening. Besides, his name was beginning to be mentioned in connection with vacant rabbinates. It was therefore necessary to hasten his graduation. After a few weeks of severe application, he finished his thesis, _De auctoritate et vi, quam gnosis in Judaismum habuerit_, which secured him the doctorate from the University of Jena in April, 1845. Under the title, “Gnosticism and Judaism,”[19] the dissertation was published in that year as the first original product of his pen. The work in every respect bears the peculiar stamp of his scientific character. It is distinguished by familiarity with patristic literature; by his method of explaining Talmud statements, commonly taken to be general, as particular historical cases; by lucidity of arrangement and presentation; and by his happy gift of divining the occult relation between things, which enabled him to shed the first rays of light upon the ספר יצירה {Hebrew: Sefer Yetzirah},[20] the most enigmatic book of rabbinical literature. The thesis was received kindly, and it gave him a place in the Jewish world of scholarship.