Maimonides was barely thirteen when his native city fell into the hands of the zealots from Morocco, and henceforth neither Jew nor Christian dared avow his faith openly in Cordova. Adoption of Islam, emigration or death were the choices held out to the infidel. Many Jews adopted the dominant faith outwardly--that was all that was demanded of them--while in the secret of their homes they observed Judaism. Some emigrated, and among them was the family of Moses' father. For a time they wandered about from city to city in Spain, and then crossed over to Fez in Morocco. This seems to us like going from the frying pan into the fire, for Fez was the lion's den itself. The conquerors of Cordova came from Morocco. And there seems to be some evidence too that the Maimon family had to appear outwardly as Mohammedans. Be that as it may, Maimonides did not stay long in Fez. On the 18th of April, 1165, the family set sail for Palestine, and after a month's stormy voyage they arrived in Acco. He visited Jerusalem and Hebron, but did not find Palestine a promising place for permanent residence and decided to go to Egypt. He settled in Old Cairo (Fostat), and with his brother David engaged in the jewel trade. His father died soon after, and later his brother met an untimely death when the ship on which he was a passenger on one of his business trips was wrecked in the Indian Ocean. Thereafter Maimonides gave up the jewel business and began to practice medicine, which at first did not offer him more than the barest necessities. But in the course of time his fame spread and he was appointed physician to Saladin's grand visier Alfadhil. He was also made spiritual head[C] of the Jews of Egypt, and what with his official duties as court physician, leader of the Jewish community, practicing physician among the people, and his literary activities, Jewish and secular, Rabbinical and scientific, he was a busy man indeed; so much so that he dissuades Samuel Ibn Tibbon, the translator of the "Guide," from paying him a visit on the ground that he would scarcely have time to spare to see him, much less to enter into scientific discussions with him.[249] Maimonides died on Monday, December 13 (20 Tebeth), 1204. [C] Not a paid post.