This work examines the debate between the Christian Origen and the pagan Celsus regard- ing the use of prophecy and inspiration to legitimate divine truth. In order to provide a historically sensitive interpretation of their debate, the author surveys the role of the daemonic in prophecy and inspiration as seen by Plato, Cicero, Plutarch, Philo, Hermas, Justin, Tertullian, Athenagoras and Clement. Despite their differences, Hauck theorizes that Origen and Celsus shared a common perspective and heritage on the role of the daemonic and that this perspective established a framework in which questions of spiritual power could be debated. Of interest to Patristic scholars and to students of late antiquity alike, The More Divine Proof contributes significantly to our under- standing of the religious and intellectual world inhabited by Origen and Celsus.