21 Lessons for the 21st Century

by Yuval Noah Harari

The world of the early twenty-first century has gone way beyond forming links between different groups. People across the globe are not only in touch with one another, they increasingly share identical beliefs and practices. A thousand years ago, planet Earth provided fertile ground to dozens of different political models. In Europe you could find feudal principalities vying with independent city states and minuscule theocracies. The Muslim world had its caliphate, claiming universal sovereignty, but also experimented with kingdoms, sultanates and emirates. The Chinese empires believed themselves to be the sole legitimate political entity, while to the north and west tribal confederacies fought each other with glee. India and South East Asia contained a kaleidoscope of regimes, whereas polities in America, Africa and Australasia ranged from tiny hunter-gatherer bands to sprawling empires.