" whether in London’s ornate arcades or Rio’s fractious favelas, whether in the high-rises of Hong Kong or the dusty workspaces of Dharavi, our culture, our prosperity, and our freedom are all ultimately gifts of people living, working, and thinking together—the ultimate triumph of the city. "

― Edward L. Glaeser , Triumph of the City: How Our Greatest Invention Makes Us Richer, Smarter, Greener, Healthier and Happier