We have had the stone age; we have had the iron age; and now we have the sky age, and the sky telegraph, and sky men, and sky cities. Mountains of stone are built out of men's visions. Towers and skyscrapers swing up out of their wills and up out of their hearts.
Gerald Stanley Lee (1913). “Crowds: A Study of the Genius of Democracy and of the Fears, Desires, and Expectations of the People”