From Greco-Roman Antiquity through to the European Enlightenment, philosophy and religious thought were inseparably interwoven. This was equally the case for the popular natural or 'pagan' religions of the ancient world as it was for the three pre-eminent 'religions of the book', namely Judaism, Christianity, and Islam. The lengthy and involved encounter of the Greek philosophical tradition - and especially of the Platonic, Aristotelian, and Neoplatonic strands of that tradition - initially with the Hellenistic cults and subsequently with the three Abrahamic religions, played a critical role...