He is Professor of Philosophy of Law at the University of Barcelona. Author of Conscientious Objection (1993), has published several books, among which include protection of the common property of mankind. A challenge for policy and law of the twenty-first century (2006), published in the same Publisher. He has written numerous articles and essays and has worked, among others, the volume of Shadows Spanish constitutional system, edited by Juan-Ramón Capella (Trotta, 2003). Since 1981 he is an active member of Barcelona's peace movement.).