" But the slice-of-life novel is really not so much a world apart as an interlude - like the conference or the film set, the holiday hotel or the voyage by sea or air. You enter it, you live there for a while, you leave again. Perhaps it will alter you; usually it will not. I suspect that the book which takes you into a world apart must also _trouble_ you, at least a little. And the troubling stays with you, like the grit in the oyster, and afterwards you are changed. "

― Susan Cooper , Dreams and Wishes: Essays on Writing for Children