" In functioning democracies, the contradictions between avowed ideals and reality can be and often are called out, causing social and political change. That does not eliminate the built-in gap, but it has a way of making societies a little more democratic and a little less unequal, in spurts. Totalitarian ideology allows no such correction. Hannah Arendt maintained that any ideology can become totalitarian, but for that to happen it needs to be reduced to a single simple idea, which is then turned into a single simple idea from which the ostensible 'laws of history' are derived - and enforced through terror. What distinguishes a totalitarian ideology is its utterly insular quality. It purports to explain the entire world and everything in it. There is no gap between totalitarian ideology and reality because totalitarian ideology contains all of reality within itself. "

― Masha Gessen , The Future Is History: How Totalitarianism Reclaimed Russia