The book clearly brings out the true teachings of the Naqshbandi and Qadiri order. The author, Shaykh Amin Ala ad-Din an-Naqshbandi belongs to a traditional Kurdish Naqshbandi family, which is well known for their exeptional scholars. Their contribution was tremendous in many Islamic disciplines, in particularly that of Shafi-'i Fiqh and Tasawwuf (according to the Naqshbandi Mujaddidi, Khalidi order).Great book, great read.If interested in Sufism , then a good read.It is a first hand writing abut the faith, the author Sheikh Amin, whom I met twice in Baghdad in 1980s, was among the sheikhs who had very good knowledge of the believe, thus I would reaffirm that Sufism provides many raw ideas about the belief.Good to read.