" Transmogrification,” Langdon said. “The vestiges of pagan religion in Christian symbology are undeniable. Egyptian sun disks became the halos of Catholic saints. Pictograms of Isis nursing her miraculously conceived son Horus became the blueprint for our modern images of the Virgin Mary nursing Baby Jesus. And virtually all the elements of the Catholic ritual—the miter, the altar, the doxology, and communion, the act of “God-eating”—were taken directly from earlier pagan mystery religions. "

― Dan Brown , The Da Vinci Code (Robert Langdon, #2)