Gianfrancesco Zanetti taught Jurisprudence and Political Theory in the University of Bologna, University of Modena, Military Academy of Modena (course for the Carabinieri Cadets), Hunter College CUNY (New York), UC Berkeley.Mortimer Sellers is Regents Professor of the University System of Maryland. He is past President of the International Association for the Philosophy of Law and Social Philosophy (IVR).Stephan Kirste holds the Chair for the Philosophy of Law and Head of the Department for Legal Theory, International and European Law at the University of Salzburg, Professor Colaborador at Pontifícia Universidade Católica do Rio Grande do Sul (Brazil) and member of the Council of the German Speaking International Andrássy University, Budapest.