" ONE NIGHT, AZHRARN Prince of Demons, one of the Lords of Darkness, took on him, for amusement, the shape of a great black eagle. East and west he flew, beating with his vast wings, north and south, to the four edges of the world, for in those days the earth was flat and floated on the ocean of chaos. "

― Tanith Lee , Night's Master (Tales from the Flat Earth #1)