“Be not afeard. The isle is full of noises, sounds, and sweet airs, that give delight and hurt not. Sometimes a thousand twangling instruments Will hum about mine ears, and sometime voices that, if I then had waked after long sleep Will make me sleep again; and then in dreaming The clouds methought would open and show riches Ready to drop upon me, that when I waked I cried to dream again” Caliban, from The Tempest ( Shakespeare )