The lectures in this book include in-depth discussions revolving around defining the concept of editing manuscripts, and specifying the relevant approaches in the discipline of humanities, as well as the technologies available for resurrecting and restoring lost texts. Some studies discussed the importance of codicology and its fine practical applications that are a critical aid to the editor, while providing a model for the codicological treatment of Arabic and Syriac philosophical manuscripts. The reader will find revelations regarding new facts in this area, such as the finding that there is no disparity between Ibn Khaldūn’s reasoning in the Muqadimmah, and his reasoning in al-ʿIbbar, based on different interpretations of possible meanings of the text. The majority of studies were concerned with reviewing the editing practice in many areas of the Islamic heritage, such as theology and Sufism. Some gave reasons for revising editions of previously published manuscripts in geography and Sufism, such as Muʿjam mā istaʿjam, and al-Futūḥāt al-Makkiyyah, etc., while other studies presented surveys of the practice of critical editing of manuscripts around the world, such as in Bosnia-Herzegovina.