Their labour-saving devices multiply drudgery; their aphrodisiacs make them impotent: their amusements bore them: their rapid production of food leaves half of them starving, and their devices for saving them have banished leisure from their country. There will be no radical change. And as for permanence—consider how quickly all machines are broken and obliterated. The black solitudes will some day be green again, and of all cities that I have seen these iron cities will break most suddenly.’