Sandro Nannini: 1986-1992 professor of moral philosophy, University of Urbino; 1989 visiting professor, University of Osnabrueck; 1996, visiting professor, University of North-London; since 1993 professor of theoretic philosophy, University of Siena. Co-ordinator of the graduate programme of cognitive sciences at the University of Siena. Research: history of social sciences, action theory, meta-ethics, philosophy of mind.