"Sometimes, though not often, he had dreams, and they were more painful than the dreams of other boys. For hours he could not be separated from these dreams, though he wailed piteously in them. They had to do, I think, with the riddle of his existence. [...] He had one of his dreams that night, and cried in his sleep for a long time, and Wendy held him tight."

J.M. Barrie, Peter Pan, XIII; XV.