... translated into the Arabiclanguage.In spite of the significance of the 1964 path-breaking article by Spengler, the real challenge to the Schumpeterian Great Gap thesis came about as a result of ... Arab-Islamic inappropriate. Writing in Arabic, the language of theology, the Prophet and the Caliphs until the Ottoman days, and the medieval international language of Muslims from Spain to the Far ... Persian translation by Sajadi. Teheran,Iran: Zuhuri.Ghazali, Abu Hamed undated: Ihya-al-Ulum al-Din (Revival of the Religious Sciences), 4 vols.Beirut, Lebanon: Dar al Nadwaa.—— 1927: Kitab Tahafut...