Langdon: Symbols are a language, that can help us understand our past. As the saying goes, [a] picture says a thousand words. But, which words?
Interpret for me please, this symbol - the first thing that comes to mind, anybody.
Voices: Hatred. Racism. Ku Klux Klan.
Langdon: Yes, yes. Interesting. But, they would disagree with you in Spain. There, they are robes worn by priests.
Langdon: Now, this symbol. Anyone?
Voices: Evil... Devil's pitchfork.
Langdon: Poor, poor Poseidon. That is his trident. A symbol of power to millions of the ancients.
Langdon: Now this symbol.
Voices: Madonna and Child. Fad [Ed: Faith?]. Christianity.
Langdon: No, it's the pagan god Horus and his mother Isis, centuries before the birth of Christ.
Langdon: Understanding our past determines actively our ability to understand the present. *Flashes the Swastika as a Nazi symbol and in other contexts* So, how do we sift truth from belief? How do we write our own histories personally or culturally? And thereby define ourselves. How do we penetrate years, centuries of historical distortion to find Original Truth?
I find the movie's ending lame though. "What matters is what you believe". I believe the World Trade Centre was felled by the Illuminati!