“It was as though in those last months he [Adolf Eichmann] was summing up the lessons that this long course in human wickedness had taught us—the lesson of the fearsome, word-and-thought-defying banality of evil.”
Hannah Arendt, Eichmann in Jerusalem: A Report on the Banality of Evil ch. 15 (1963)
Excerpted from: Schapiro, Fred, ed. The Yale Book of Quotations. New Haven: Yale University Press, 2006.