Epistles of the Brethren of Purity. The Ikhwan al-Safa' and their Rasa'il

This is the introductory volume for a new critical edition of The Epistles of the Brethren of Purity, an encyclopaedic philosophical and scientific work of the 10th century produced by an esoteric fraternity based in Baghdad and Basra. Specially written essays explore its authorship and dating, its intellectual content and influence.