He works especially in the field of Ethics and Political Philosophy. He was born on December 24, 1934 in the town of La Paz, Mendoza, Argentina. Mexican citizen, since 1975. In Mexico, he is Professor Emeritus of the Metropolitan Autonomous University, teaches an Extraordinary Chair in the Faculty of Philosophy and Letters of the National Autonomous University of Mexico, Emeritus Researcher of the National System of Researchers (SNI). Interim Rector of the Autonomous University of Mexico City. Member of the American Academy of Arts and Sciences (Massachusetts). He has been invited to teach a semester at the Universities of Harvard, Duke, John’s Hopkins, Rutgers, University of South Africa, Universität Köln, Goethe Universität Frankfurt, Universität Wien, Université Catholique de Louvain, Korea University (Seoul), etc.
Bachelor of Philosophy from the National University of Cuyo (Mendoza, Argentina), Doctor of Philosophy from the Complutense University of Madrid, Doctor of History from the Sobornne de Paris and Bachelor of Theology from Paris and Münster. He has been awarded the Doctorate Honoris Causa by the Universities of Freiburg (Switzerland), San Andrés (La Paz, Bolivia), Buenos Aires (Argentina), Santo Tomás de Aquino (Bogotá), the National Universities of General San Martín, General Sarmiento, and the University of Cuyo (Argentina), the National University (San José, Costa Rica), Panama, etc.
Founder with others of the Philosophy of Liberation movement. In 2013 he was appointed to the Steering Committee of the International Federation of Philosophical Societies (FISP, Geneva).