In the year 1172 Maimonides wrote the Iggeret Teman, or Petaḥ-tiḳvah (“Letter to the Jews in Yemen,” or “Opening of hope”) in response to a letter addressed to him by Rabbi Jacob al-Fayumi on the critical condition of the Jews in Yemen. Some of these Jews had been forced into apostasy; others were made to believe that certain passages in the Bible alluded to the mission of Mohammed; others again had been misled by an impostor who pretended to be the Messiah. The character and style of Maimonides’ reply appear to have been adapted to the intellectual condition of the Jews in Yemen, for whom it was written. These probably read the Bible with Midrashic commentaries, and preferred the easy and attractive Agadah to the more earnest study of the Halakah. It is therefore not surprising that the letter contains remarks and interpretations which cannot be reconciled with the philosophical and logical method by which all the other works of Maimonides are distinguished. After a few complimentary words, in which the author modestly disputes the justice of the praises lavished upon him, he attempts to prove that the present sufferings of the Jews, together with the numerous instances of apostasy, were foretold by the prophets, especially by Daniel, and must not perplex the faithful. It must be borne in mind, he continues, that the attempts made in past times to do away with the Jewish religion, had invariably failed; the same would be the fate of the present attempts; for “religious persecutions are of but short duration.” The arguments which profess to demonstrate that in certain Biblical passages allusion is made to Mohammed, are based on interpretations which are totally opposed to common sense. He urges that the Jews, faithfully adhering to their religion, should impress their children with the greatness of the Revelation on Mount Sinai, and of the miracles wrought through Moses; they also should remain firm in the belief that God will send the Messiah to deliver their nation, but they must abandon futile calculations of the Messianic period, and beware of impostors. Although there be signs which indicate the approach of the promised deliverance, and the times seem to be the period of the last and most cruel persecution mentioned in the visions of Daniel (xi. and xii.), the person in Yemen who pretends to be the Messiah is an impostor, and if care be not taken, he is sure to do mischief. Similar impostors in Cordova, France, and Africa, have deceived the multitude and brought great troubles upon the Jews.—Yet, inconsistently with this sound advice the author gives a positive date of the Messianic time, on the basis of an old tradition; the inconsistency is so obvious that it is impossible to attribute this passage to Maimonides himself. It is probably spurious, and has, perhaps, been added by the translator. With the exception of the rhymed introduction, the letter was written in Arabic, “in order that all