"Huge city settlments of people exist wihout their presence generating anything much except stagnation and, ultimately, a fatal discontent with the place. It is not that they are a different kind of people, somehow duller or unappreciative of vigor and diversity. Often they include hordes of searchers, trying to sniff out these attributes somewhere, anywhere. Rather, something is wrong with their districts; something is lacking to catalyze a district population's ability to interact economically and help form effective pools of use."
The Death and Life of Great American Cities