Guide for the Perplexed, Part 2, The by Moses Maimonides (1138 - 1204)

In the Guide of the Perplexed Maimonides (Moses ben Maimon) achieved an original and highly influential synthesis of religious and secular learning, drawing on Rabbinical teachings, the Aristotelian and neo-Platonic doctrines then current in the Islamic world, as well as his own scriptural exegeses and philosophical arguments. According to Encyclopaedia Judaica, "almost every philosophic work for the remainder of the Middle Ages cited, commented on, or criticized Maimonides' views." - Summary by Kazbek