This book comprises of four main parts as “Criticisms against Sufism before Ibn Taymiyya”, “Ibn al-ʿArabī according to Ibn Taymiyya”, “The matters criticized by Ibn Taymiyya”, and “Criticisms against Sufism after Ibn Taymiyya”. As far as understood the author focuses mostly on Ibn Taymiyya and Sufism rather than Ibn Taymiyya and Ibn al-ʿArabī. He legitimates the differences between Ibn al-ʿArabī and Ibn Taymiyya by drawing attention to some historical conditions such as the absence of authority in knowledge after the death of the prophet Muhammad, a development of freedom of thinking, increase of Muslim lands and populations, etc. The author, who emphasizes his endeavor to keep objectivity when he assesses these figures, thinks that the problem does not arise from the expressions and ideas found in Sufism but the method of re-interpretation of these expressions and ideas. The book is enriched by means of significant citations from famous and reputable thinkers like Sulamī, Sarrāj, Qushayrī, Ghazzālī, Hujwirī, Ibn Hazm, and Ibn al-Jawzī. That the book was written as a Ph.D dissertation 35 years ago and is published in 2017 without any correction, addition, and deletion is the weakest side because the author passes over all academic studies as books and articles which have been produced in this long time