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Levi ben Gerson's solution, whatever we may think of its scientific or philosophic value, is surely very bold as theology, we might almost say it is a theological monstrosity. It practically removes from God the definite knowledge of the outcome of a given event so far as that outcome is contingent. Gersonides will not give up the contingent, for that would destroy freedom.

Since the larger views and problems were already common property, the efforts of Gersonides were directed to a more minute discussion of the more technical details of such problems as the human intellect, prophecy, Providence, creation, and so on.

Aristotelianism, introduced by Alfarabi, Avicenna and Averroes among the Arabs, and Ibn Daud and Maimonides among the Jews, dominated all speculative thought, and the old Kalam was obsolete and forgotten. Gersonides no longer regards the Kalamistic point of view as a living issue. He ignores it entirely. His problems as we have seen are those raised by the Averroistic system.

While it is true that all the Jewish thinkers of the middle ages were for a great part apologetes, this did not prevent a Maimonides or a Gersonides from making a really thorough and disinterested study of science and philosophy; and often their scientific and philosophic conviction was so strong that the apologia was pro philosophia sua rather than pro Judaismo.

We are sure that Abraham Ibn Daud, the forerunner of Maimonides, had a thorough familiarity with the ideas of Aristotle; and those who came after him, for example Maimonides, Gersonides, Hasdai Crescas, show clearly that they were deep students of the ideas represented in the writings of the Stagirite.

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.

On the other hand, if God does know everything in the future as well as in the past, man is no longer free to act in a manner contrary to God's foreknowledge. This difficulty was recognized by Maimonides as well as by Gersonides, and they solved it in different ways.

Similarly an unmoved mover cannot be body, to be sure, but it may be a physical power like a soul, which in moving the body is not itself moved by that motion. Aristotle's proofs therefore are not sufficient to produce the conviction that the movers of the spheres and God himself are separate Intelligences. Gersonides accordingly follows a different method.

Besides, the assumption of the world's eternity with its corollary of the necessity and immutability of its phenomena saps the foundation of all religion, makes miracles impossible, and reduces the world to a machine. Gersonides is on the whole agreed with Maimonides. He admits that Aristotle's arguments are the best yet advanced in the problem, but that they are not convincing.

He knows the non-existent, as he knows the future; and his knowledge of the contingent does not remove its contingent character. Maimonides and Gersonides had difficulty with this problem and we know their respective solutions. Gersonides, for reasons metaphysical as well as ethical, does not scruple to limit God's knowledge to universals.