"Mostly I've not," Jamie admits. "Mostly just people. People fighting people, usually, over this bit of land or that."

. . . he means human people.

"Demons, sometimes -- though I wouldn't say I've met them, exactly, or at least I've tried not to if I could help it. Those wars are less about land, more about not wanting to get eaten."

(There's always a war, or several wars. Almost always. Less so, now that They're gone, but it doesn't change as much as you would think.)

"Though you might call demons aliens, I suppose. They come from another place, anyway."