President of the Fondazione Istituto Gramsci (Rome) and of the scientific commission in charge of editing the writings of Antonio Gramsci. A historian of political thought, he has dedicated numerous studies to the Gramscian corpus, among which stand out Gramsci e Togliatti (1991), Appuntamenti con Gramsci (1999) and Modernità alternative. Il Novecento di Antonio Gramsci (2017). He has also directed numerous recovery investigations, and first editions, of the Letters from Prison and the Prison Notebooks.