Missing those who are gone.
Sir James Barrie met three children in Kensington Gardens in 1897--George, Jack and Peter Llewellyn Davies. Sir James befriended them and told them stories of how "baby Peter would fly to the Gardens at night and pick up dead babies that had fallen from their carriages, taking them to a paradise for children." (from The Writer, p. 10, April 2004)
When Sir James was six, his 12-year-old brother died. He wrote of his creation, Peter Pan, "Perhaps he was a little boy who died young, and this is how the author conceived his subsequent adventures. Perhaps he was a boy who was never born at all--a boy whom some people longed for, but who never came. It may be that those people hear him at the window more clearly than children do."