It is one of the most prominent figures of the Italian left. He developed a political activity as secretary of Potere Operaio until 1972, when he was interrupted by political disagreements. He has taught at the universities of Trento, Padua and Bremen, and has also worked as an independent consultant in the logistics and transportation sectors. They highlight his works "La tribù delle talpe" (1978) and "Nazism and working class" (2000), as well as many articles published in recent years.