"Believe whatever you want, Eli. But knowledge is power, and no one's got more of both than the Tellurians. They've got quite the collection of lost manuscripts about the beasts." Henry was a very early in the book kind of character. In the very first chapter Henry and Eli his best friend face one of the beasts he's talking about in the quote. He's a very stubborn, knowledgeable, kind, sweet, caring and brave character.