The Light Princess is a Scottish fairy tale by George MacDonald, first published in 1864. Drawing on inspiration from "Sleeping Beauty", it tells the story of a princess afflicted by a constant weightlessness, unable to get her feet on the ground, both literally and metaphorically, until she finds a love that brings her down to earth.
George MacDonald was one of the foremost fantasy writers of the 19th century and influenced just about every writer that came after him. He was a mentor of Lewis Carroll, a friend of Mark Twain's, and a man who helped shape the works of authors like Tolkien.