The Night Circus - Pg 226

   "The wizard was old and quite clever himself, of course, and he had gone a very, very long time without telling his secrets to anyone at all. Maybe over the years he had forgotten about the importance of keeping them, or maybe he was distracted by her youth or beauty or cleverness. Maybe he was just tired, or maybe he had too much wine and didn't realize what he was doing. Whatever the circumstances, he told his deepest secrets to the girl, the hidden keys to all his magic."