Antonio Negri has taught Doctrine of the State at the Università degli Studi di Padova and in many other prestigious European universities. After exile in France, Negri has emerged as one of the most influential intellectuals in the contemporary debate. His works on Marx, Machiavelli and Spinoza, on constituent power and the transformations of the State form, some written while in prison, have opened up new fields of research on a global level.