Crystal Addey has given us a book to be welcomed warmly, reminding us of what an essential role practical¯ relations with the gods maintains in later Neoplatonism. Like it or not, Platonism is a religion as well as a philosophy, and Dr Addey masterfully explores the implications of that, while relating the religion to the philosophy. John Dillon, Trinity College Dublin, Ireland A very interesting exploration of the importance of oracles, divination and other religious practices to the philosophers of Late Antiquity, viewed against the general religious background of the period. Dominic O'Meara, Professor emeritus of philosophy, University of Fribourg, Switzerland "[ T]he book offers a good interpretation of Iamblichus De mysteriis and a wealth of important observations on various details of the material. The new approach it proposes to the study of Neoplatonic rituals promises insights in the field of Neoplatonic religiosity well beyond Porphyry and Iamblichus. This is an important contribution to research on theurgy." Bryn Mawr Classical Review