Joseph Ibn Caspi (1297-1340) is likewise a meritorious figure as a commentator of Maimonides and as a philosophical exegete of Scripture. But none of these men stands out as an independent thinker with a strong individuality, carrying forward in any important and authoritative degree the work of the great Maimonides. Great Talmudic knowledge, which was a necessary qualification for national recognition, these men seem not to have had; and on the other hand none of them felt called upon or able to make a systematic synthesis of philosophy and Judaism in a large way.
Levi ben Gerson (1288-1344) was the first after Maimonides who can at all be compared with the great sage of Fostat. He was a great mathematician and astronomer; he wrote supercommentaries on the Aristotelian commentaries of Averroes, who in his day had become the source of philosophical knowledge for the Hebrew student; he was thoroughly versed in the Talmud as his commentary on the Pentateuch shows; and he is one of the recognized Biblical exegetes of the middle ages. Finally in his philosophical masterpiece "Milhamot Adonai" (The Wars of the Lord),333 he undertakes to solve in a thoroughly scholastic manner those problems in philosophy and theology which Maimonides had either not treated adequately or had not solved to Gersonides's satisfaction. That despite the technical character and style of the "Milhamot," Gersonides achieved such great reputation shows in what esteem his learning and critical power were held by his contemporaries. His works were all written in Hebrew, and if he had any knowledge of Arabic and Latin it was very limited, too limited to enable him to make use of the important works written in those languages.334 His fame extended beyond the limits of Jewish thought, as is shown by the fact that his scientific treatise dealing with the astronomical instrument he had discovered was translated into Latin in 1377 by order of Pope Clement VI, and his supercommentaries on the early books of the Aristotelian logic were incorporated, in Latin translation, in the Latin editions of Aristotle and Averroes of the 16th century.335
Levi ben Gerson's general attitude to philosophical study and its relation to the content of Scripture is the same as had become common property through Maimonides and his predecessors. The happiness and perfection of man are the purpose of religion and knowledge.
