Diego Gambetta (PhD, FBA) is Carlo Alberto Chair in social and political science at the Collegio Carlo Alberto, Turin, Italy, and Emeritus Fellow of Nuffield College, Oxford. He has published academic books and articles, on trust and signalling theory, criminal organisations, the North-South Italian divide, and violent extremists. For the general public he has written on Primo Levi’s death, discursive machismo, and heroic impatience. He was awarded the “Paolo Borsellino Prize” for his book on the Sicilian Mafia. He has held visiting positions at several universities (Chicago, Columbia, Science Po, College de France, ETH, Stanford, NYU). In 2000 he was made a Fellow of the British Academy.