Nachmanides, first as rabbi of Girona and later as chief rabbi of Catalonia, seems to have led a largely untroubled life. When well advanced in years, however, his life was interrupted by an event which made him leave his family and his country and wander in foreign lands. This was the religious disputation in which he was called upon to defend his faith in 1263. The debate was initiated by a Pablo Christiani, a Jewish convert to Christianity, who had been sent by the Dominican Master...