“Robert wondered if any of Harvard's revered Egyptologists had ever knocked on the door of a pyramid and expected an answer.”

“In which year did a Harvard sculler last outrow an Oxford man at Henley?" Langdon had no idea, but he could imagine only one reason the question had been asked. "Surely such a travesty has never occurred.”

“Don't tell anyone, but on the pagan day of the sun god Ra, I kneel at the foot of an ancient instrument of torture and consume ritualistic symbols of blood and flesh. ...And if any of you care to join me, come to the Harvard chapel on Sunday, kneel beneath the crucifix, and take Holy Communion.”

“Widespread acceptance of an idea is not proof if its validity. -Robert Langdon”

“Neutrinos have mass? I didn't even know they were Catholic!" Robert to Vittoria”

“Coincidence was a concept he did not entirely trust. As someone who had spent his life exploring the hidden interconnectivity of disparate emblems and ideologies, Langdon viewed the world as a web of profoundly intertwined histories and events. The connections may be invisible, he often preached to his symbology classes at Harvard, but they are always there, buried just beneath the surface.”

“Skepticism has become a virtue. Cynicism and demand for proof has become enlightened thought. Is it any wonder that humans now feel more depressed and defeated than they have at any point in human history?”