Along with George Orwell, the 20th-century political theorist Hannah Arendt is a new bestseller. She famously coined the phrase “the banality of evil” and wrote towering works like The Origins of Totalitarianism. She was concerned with the human essence of events that we analyze as historical and political. Totalitarianism she described as “organized loneliness,” and loneliness as the “common ground for terror.” The historian, she said, always knows how vulnerable facts are. And thinking is not something for elites; it is the human power to keep possibility alive.