Heard melodies are sweet, but those unheard Are sweeter; therefore, ye soft pipes, play on; Not to the sensual ear, but, more endear'd, Pipe to the spirit ditties of no tone.
John KeatsTo feel forever its soft fall and swell, Awake for ever in a sweet unrest, Still, still to hear her tender-taken breath, And so live ever-or else swoon in death.
John Keats