Such overwhelming traumas tear at the bonds that hold cultures together. The epidemic that struck Athens in 430 B.C., Thucydides reported, enveloped the city in “a great degree of lawlessness.” The people “became contemptuous of everything, both sacred and profane.” They joined ecstatic cults and allowed sick refugees to desecrate the great temples, where they died untended. A thousand years later the Black Death shook Europe to its foundations. Martin Luther’s rebellion against Rome was a grandson of the plague, as was modern anti-Semitism. Landowners’ fields were emptied by death, forcing
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