"People who flock to cities looking for jobs and more interesting lives will flock back again if jobs and more interesting lives are to be found where they came from. It has been suggested that, with modern systems of communication, the America of the future may be simply a network of small towns. But should we not say Walden Twos? A few skeletons of cities may survive, like the bones of dinosaurs in museums, as the remains of a passing phase in the evolution of a way of life."
- B.F. Skinner, Walden Two (introduction)