And because mere walls and windows must soon drive to madness a man who dreams and reads much, the dweller in that room used night after night to lean out and peer aloft to glimpse some fragment of things beyond the waking world and the greyness of tall cities. After years he began to call the slow-sailing stars by name, and to follow them in fancy when they glided regretfully out of sight; till at length his vision opened to many secret vistas whose existence no common eye suspects. And one night a mighty gulf was bridged, and the dream-haunted skies swelled down to the lonely watcher's window to merge with the close air of his room and make him a part of their fabulous wonder.