Rizvi, S. Epistles of the Brethren of Purity: Sciences of the Soul and Intellect Part I. An Arabic Critical Edition and English Translation of Epistles 32-36 By Paul E. Walker, Ismail K. Poonawala and David Simonowitz, Godefroid De Callatay, eds./Trans. (Oxford: Oxford University Press in Association With the Institute of Ismaili Studies, 2016. 434 pages.). AJIS 2016, 33, 106-109.