Everything is possible. The impossible just takes longer.
Daniel Gerhard Brown is an American author of thriller novels, most notably the Robert Langdon stories: Angels & Demons , The Da Vinci Code , The Lost Symbol , Inferno and Origin . His novels are treasure hunts set in a 24-hour period, and feature the recurring themes of cryptography, keys, symbols, codes, and conspiracy theories. His books have been translated into 56 languages, and as of 2012, sold over 200 million copies. Three of them, Angels & Demons , The Da Vinci Code and Inferno have been adapted into films.