Daemons in Hellenic and Christian Antiquity is a groundbreaking analysis of the interplay between Greek and Christian ideas in Late Antiquity, with a focus on how daemons were conceived of by intellectuals in both traditions. Its protagonists are Origen, the great third-century philosopher and theologian, and Porphyry, a philosopher of the next generation whose ideas were strikingly influenced by Origen.

By critical comparative study of Origen’s Contra Celsum and Porphyry’s De Abstinentia, author Panayiotis Tzamalikos establishes beyond doubt that...