Norberto Bobbio was an Italian philosopher of law and political sciences and a historian of political thought. He also wrote regularly for the Turin-based daily La Stampa. Bobbio was a social liberal in the tradition of Piero Gobetti, Carlo Rosselli, Guido Calogero, and Aldo Capitini. He was also strongly influenced by Hans Kelsen and Vilfredo Pareto. He was considered one of the greatest Italian intellectuals of the 20th century.