The school of Sora was in a sad state of decadence, and was so deficient in learned men, that the Exilarch David ben Zaccaï found it necessary to invest a weaver named Yom-Tob Kahana ben Jacob, with the honor of the Gaonate, but he died in his second year of office (926-928). The Gaon of Pumbeditha, Kohen-Zedek, who did his best to establish his college as the exclusive authority, made an agreement with the Exilarch, to whom he had become reconciled, to close the school of Sora, to transplant the members to Pumbeditha, and to appoint a titular Gaon of Sora, who should have his seat in Pumbeditha. The son of a Gaon, named Nathan ben Yehudaï, was invested with this titular dignity, but he died suddenly. His sudden death seems to have been taken as a condemnation of the intention to abolish the old college at Sora. The Exilarch David then determined to fill up the vacancy and to restore the ancient school of Sora. He had two candidates in view: Saadiah, and Zemach ben Shahin, an obscure member of the old nobility. The Exilarch appealed to the blind Nissi Naharvani to assist him in his choice. His advice was the more disinterested as he himself had declined the honor. Nissi voted for Zemach, but not because he had any personal dislike to Saadiah; on the contrary, he manifested much love for him. "Saadiah surpasses all his contemporaries in wisdom, piety, and eloquence," he said of him, "but he is very independent, and shrinks from nothing." Nissi justly feared that Saadiah's inflexible spirit would be the cause of disputes and dissensions between him and the Exilarch. Nevertheless, David decided for Saadiah. He was called from Egypt to Sora, and formally installed as Gaon (May, 928). It was an exceptional circumstance that a foreigner who had not studied in the Talmudic schools, and had not passed step by step through the various offices should, at a bound, attain to the highest honor next to the Exilarchate. Besides, Saadiah was more known for his scientific work than for his Talmudic scholarship. With his call to office, Babylonia in a sense resigned the supremacy which for seven centuries it had held over all other lands. This supremacy was now enjoyed by another country, and philosophy was placed on a level with the Talmud. The spirit of inquiry that had been banished from the halls of the schools with Anan, the founder of Karaism, made a solemn return into those halls with Saadiah.