Plato, Thomas More, and Aldous Huxley all place utopia on an island—a small city-state that self-governed. For a long time, the city-state was our best and only form of government. But eventually, they went wrong where the state in Plato’s Republic did: they grew, consuming more land and more people and requiring an even bigger body of government to manage them all. Eventually, they were no longer city-states, they became nation-states. Maybe that wasn't a good thing.