“The last clear definite function of man - muscles aching to work, minds aching to create beyond the single need - this is man. To build a wall, to build a house, a dam, and in the wall and house and dam to put something of Manself, and to Manself take back something of the wall, the house, the dam; to take hard muscles from lifting, to take the clear lines and form from conceiving. For man, unlike any other thing organic or inorganic in the universe, grows beyond his work, walks up the stairs of his concepts, emerges ahead of his accomplishments.”