“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.”

“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.”

“Mr. Langdon all questions were once spiritual. Since the beginning of time spirituality and religion have been called on to fill in the gaps that science did not understand. The rising and setting of the sun was once attributed to Helios and a flaming chariot. Earthquakes and tidal waves were the wrath of Poseidon. Science has now proven those gods to be false idols. Soon all gods will be proven to be false idols. Science has now provided answers to almost every question man can ask. There are only a few questions left and they are the esoteric ones. Where do we come from What are we doing here? What is the meaning of life and the universe? ”

“He saw blurry white forms. Why they all are wearing white? Langdon decided he was either in an asylum or heaven. From the burning in his throat, Langdon decided it could not be heaven.”

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

“The Bible did not arrive by fax from heaven. The Bible is the product of man, my dear. Not of God. The Bible did not fall magically from the clouds. Man created it as a historical record of tumultuous times, and it has evolved through countless translations, additions, and revisions. History has never had a definitive version of the book.”

“Mr. Langdon, I did not ask if you believe what man says about God. I asked if you believed in God. There is a difference. Holy scripture is stories...legends and history of man's quest to understand his own need for meaning. I am not asking you to pass judgment on literature. I am asking if you believe in God. When you lie out under the stars, do you sense the divine? Do you feel in your gut that you are staring up at the work of God's hands?”