The present study is the first attempt which has been made to give in connected form a history of the anti- Maimonidean controversy. S0 great was the impact made by Maimonides on medieval Judaism that people divided themselves into admirers and enemies of his rationalism. The story of the conflict is important both for history and for theology. It sheds considerable light on the war between faith and reason among Jews. It is a chapter also in the clash between the conservative and progressive forces in Judaism. These pages enrich our knowledge of the medieval mind and constitute a fascinating episode in the history of rationalism. Joseph Sarachek New York, June, 1935