In 325 A.D., the Roman Emperor Constantine decided to unify Rome under a single religion ... Historians still marvel at the brilliance with which Constantine converted the sun-worshipping pagans to Christianity. By fusing pagan symbols, dates, and rituals into the growing Christian tradition, he created a kind of hybrid religion that was acceptable to both parties.
Dan BrownFACT: The Priory of Sion - a European secret society founded in 1099 - is a real organization. In 1975 Paris's Bibliothque Nationale discovered parchments known as Les Dossiers Secrets, identifying numerous members of the Priory of Sion, including Sir Isaac Newton, Botticelli, Victor Hugo, and Leonardo da Vinci.
Dan Brown