I recently read and reviewed Burckhardt’s “Alchemy” (click on the author’s name above). That book is a much easier read. Now I noticed that there are two translations of this introduction to Sufism. I got a translation of D.M. Matheson from 1976, but there is also a translation by William C. Chittick from 2008. I do not know who is the translator of the title that I linked the cover to. I could not even find the cover of the version that I have on the web, let alone a link to that particular publication. In any case, I do not know if this book was written in a more difficult style of translated in such a manner.
This little book (126 pages) is divided in three parts with 5, 6 or 7 chapters. The sections are called “The nature of Sufism”, “The doctrinal foundations” and “Spiritual realization”. The first part makes a nice introduction speaking of different kinds of Sufism. In the second we learn about what Sufism has to say. The first part is the most interesting since it describes how Sufis reach for the above. Not very much in depth though, but enough to get an idea.
Burckhardt was, of course, a Traditionalist. You may know that the Sufi doctrine is quite close to the Traditionalistic way of thinking in several aspects. This is undoubtely the reason that more than one Traditionalist became Muslim or Sufi. The Traditionalistic approach may have coloured Burckhardt’s account written down in this book, but I am not versed in Sufi doctrine enough to be able to say anything about this.