Peter frowns at that. It's the first time he's really frowned since this conversation began.

"Yeah, maybe I'm excitable. Because I think--" He swallows, then presses forward. "--I think the things that people can do are really amazing and they're something to be proud of and the Earth I come from, there's heroes, but not nearly as many as there seem to be everyone else."

Peter swings an arm out at the library, at the neat rows of bookshelves.

"You put together this entire library of books. If you did that, you've got to understand how people might want to know more than what they know now. Can you really blame me for wanting to know more about the things people can do? The kind of heroes they are?"

Peter lowers his arm. "If I'm gonna be stuck here, I at least want to learn how to be a better hero before I go home."