"Just as water, gas, and electricity are brought into our houses from far off to satisfy our need in response to a minimal effort, so we shall be supplied with visual or auditory images, which will appear and disappear at a simple movement of the hand, hardly more than a sign" 
(op. cit., p.226.)                 
Paul Valery, quote from,
The work of art in the age of mechanical reproduction (p.219)