"The only difference between you and God is that you have forgotten you are divine."

"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?"

"Knowledge is a tool, and like all tools, its impact is in the hands of the user."

"My interest in secret societies is the product of many experiences, some I can discuss, others I cannot."

"History, if it has taught us anything at all, has taught us that the strange ideas we deride today will one day be our celebrated truths."

"PHI is one H of a lot cooler than PI!"

"One square yard of drag will slow a falling body almost twenty percent."

"Knowledge is power, and the right knowledge lets man perform miraculous, almost godlike tasks."

"Hoped to prove that science and religion are two totally compatible fields-two different approaches to finding the same truth."

"The power of human thought grows exponentially with the number of minds that share that thought."

"Small minds have always lashed out at what they don't understand."

"Symbols, Langdon said, "in no way confirm the presence of their original creators."