American Gods was designed to be if not open-ended, at least a trilogy kind of shape, so there's definitely one more book, probably another couple of books there to get written.
Neil GaimanGrown-ups don't look like grown-ups on the inside either. Outside, they're big and thoughtless and they always know what they're doing. Inside, they look just like they always have. Like they did when they were your age. Truth is, there aren't any grown-ups. Not one, in the whole wide world.
Neil GaimanHow big are souls anyway?" asked Coraline. The other mother sat down at the kitchen table and leaned against the back wall, saying nothing. She picked at her teeth with a long crimson-varnished fingernail, then she tapped the finger, gently, tap-tap-tap against the polished black surface of her black button eyes.
Neil Gaiman