Operation: Outer Space

Jed Cochrane tried to be cynical as the helicab hummed softly through the night over the city. The cab flew at two thousand feet, where lighted buildings seemed to soar toward it from the canyons which were streets. There were lights and people everywhere, and Cochrane sardonically reminded himself that he was no better than anybody else, only he'd been trying to keep from realizing it. He looked down at the trees and shrubbery on the roof-tops, and at a dance that was going on atop one of the tallest buildings.
All roofs were recreation-spaces nowadays. They were the only spaces available. When you looked down at a city like this, you had cynical thoughts. Fourteen million people in this city. Ten million in that. Eight in another and ten in another still, and twelve million in yet another ... Big cities. Swarming millions of people, all desperately anxious - so Cochrane realized bitterly - all desperately anxious about their jobs and keeping them...