As Marcus Aurelius would write in his diary at some point during this horrible plague, history has a way of repeating itself. “To bear in mind constantly that all of this has happened before,” he said in Meditations. “And will happen again—the same plot from beginning to end, the identical staging. Produce them in your mind, as you know them from experience or from history: the court of Hadrian, of Antoninus. The courts of Philip, Alexander, Croesus. All just the same. Only the people different.”