Michael Peppiatt, a renowned Bacon scholar, friend of the artist and author of the definitive account of his life and work, Francis Bacon: Anatomy of an Enigma, is discussing what he believes to be a paradox at the heart of Bacons work - as an outspoken atheist, why was Bacon obsessively drawn to the highly charged symbols of the Christian faith, namely the Crucifixion and the Pope as well as to the great classical myths?