" In 1900, Europe accounted for a quarter of the world’s population. By 2060, it may account for just 6%—and almost a third of these will be more than 65 years old.” Europe does face severe demographic problems, but the size of a population is not highly correlated with power, and “predictions of Europe’s downfall have a long history of failing to materialize. "

― Joseph S. Nye Jr. , The Future of Power