Klaus: (to Caroline) I never answered your question If I'd ever thought about being human. Once, I was on a track in the Andes and a hummingbird flew up to me. It just hovered there, staring at me. It's tiny heart was pattering like a machine gun. And I thought, what a thing. You know, to have to work that hard everyday just to stay alive. To be constantly on the verge of death...and how satisfying every day must be that it survived. And that was the only time I thought about being human.