The mystical teachings of the Kabbala drew heavily on anagrams—rearranging the letters of Hebrew words to derive new meanings. French kings throughout the Renaissance were so convinced that anagrams held magic power that they appointed royal anagrammatists to help them make better decisions by analyzing words in important documents. The Romans actually referred to the study of anagrams as ars magna—"the great art."

Langdon looked up at Sophie, locking eyes with her now. "Your grandfather's meaning was right in front of us all along, and he left us more than enough clues to see it."

Without another word, Langdon pulled a pen from his jacket pocket and rearranged the letters in each line.

O, Draconian devil! Oh, lame saint!

was a perfect anagram of...

Leonardo da Vinci! The Mona Lisa!

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