Eugenio Colorni (1909-1944), socialist philosopher and political activist, was also interested in literary criticism, natural sciences and psychology. Following the racial laws of 1937, he was incarcerated and then confined in the Ventotene island where, together with Altiero Spinelli, Ernesto Rossi, and Ursula Hirschmann promoted the European Federalist Movement. Leader in the Resistance in Rome, he was murdered by the infamous fascist and Nazi Koch gang a few days prior to the liberation of Rome.