One of the most original social scientists of the twentieth century, Albert O. Hirschman led an uncommonly dramatic life. After fleeing Nazi Germany as a youth, he fought in the Spanish Civil War, took part in antifascist activities in Italy, and organized an underground rescue operation in Marseille through which more than 2,000 people, including Marc Chagall, Arthur Koestler, and Hannah Arendt, escaped Europe. Hirschman moved across topics, methodologies,...