The Guide for the Perplexed
He began the study of the Talmud at an early age. At age fourteen he was married, according to the custom of the time, to the daughter of the wealthy merchant Habermann. He then went to live with his father-in-law at Zhovkva, near Lemberg, where he devoted himself entirely to his studies, beginning with Maimonides' "The Guide for the Perplexed", and studying other Hebrew philosophical writings.