For me, it cleared up many misconceptions that I had about Tazkiyyh/Tasawwuf/Sulook and its relation to Deen. The author was a world renowned scholar who Allah made his writings pleasing to the sight and comforting to the soul. All translated works of his have that effect in my opinion. Easy to read yet highly academic. I can only imagine what one will experience reading his works in Urdu or Arabic. Here's a link to the book (where it can be purchased) and to a better review: http://www.al-rashad.com/The-Insepar...rt_p_3590.html