In September, 1219, as the armies of the Fifth Crusade besieged the Egyptian city of Damietta, Francis of Assisi went to Egypt to preach to Sultan al-Malik al-K?mil.
Although we in fact know very little about this event, this has not prevented artists and writers from the thirteenth century to the twentieth, unencumbered by mere facts, from portraying Francis alternatively as a new apostle preaching to the infidels, a scholastic theologian proving...