At the time when Spain showed such an abundance of distinguished men, France and Germany were lacking in great creative minds, and the history of the Jews of these countries presents few interesting features. They lived entirely undisturbed, were landowners, cultivated the vine, occupied themselves with handicrafts and trade, and only had to pay to the prince, in whose territory they dwelt, a kind of Jew-tax. The French and German Jews doubtless lacked energy and chivalry, but theirs was not a lower grade of culture than that of their Christian compatriots. Their chief occupation on both sides of the Rhine was the study of the Talmud, into which Gershom had initiated them. "They drive away sleep to absorb themselves in the Talmud." The first Jewish persecution on Andalusian soil by the Mahometan fanatics of Granada alarmed all the communities of Spain, but it did not have the effect of discouraging them, or producing stagnation. The pursuit of science and poetry had become second nature to the Jews of southern Spain, and only frequent and crushing disasters could repress their love. The persecution was neither repeated nor imitated. The people of Granada had murdered the Jewish vizir and several of his nation, which, however, did not hinder other kings or emirs from attracting gifted Jews to their courts, entrusting them with important affairs, and placing the Jews on an equality with the ruling population of the state. An Arab historian complained that the princes of the Faithful abandoned themselves to sensual enjoyments, placed their power in the hands of the Jews, and made them Hayibs, vizirs and private secretaries. The example of the Mahometan courts was followed even by Christian states. They also began to employ Jews in affairs of state, and their ability and faithfulness added greatly to the growth of their power. Thus the position of the Spanish Jews remained for a time wholly unaffected by the success of Christian arms and the gradual dissolution of the Mahometan principalities. They felt as much at home under the dominion of the Cross in Spain, as under that of the Crescent, and were able, unfettered, to satisfy their love of investigation. Their ardor in the domain of science and of poetry, far from cooling, increased, if possible, more and more, and the number of students grew from year to year. Yet it appears that in the period after Ibn-Nagrela and Ibn-Gebirol, poetry, philology, exegesis, and philosophy, although eagerly followed, were superseded by the study of the Talmud, which became, as it were, the central study. The dialectics of the Talmud were revived and cultivated simultaneously in Spain, Africa, and France. The study of the Talmud was so thoroughly prosecuted that the achievements of the Geonim were thrown into the shade. Six men, of whom five bear the name of Isaac, and the other, that of Yizchaki, may be regarded as the principal figures of the second rabbinical age: