M. Bréhier has written not only a critical work but also a clear and readable exposition of the philosophy of Plotinus which will serve as an admirable introduction to his thought. Few Plotinian scholars combine such a rich historical background with critical scholarship and philosophical insight as M. Bréhier does. Scholars acknowledge that the Introductions to his French translation of the Enneads contain masterful analyses of the arguments and that he traces the sources of the philosophy of Plotinus with great ability. The translation itself is one of the most lucid and accurate in existence.