Editorial activities in which the chair is involved include membership in books series, academic journal boards, newsletters from professional associations, and handbooks.

Reviewing Staff, Choice, 1971-82

Reviewing Staff, Mathematical Reviews, 1973-79

Editorial Board, Philosophy and Phenomenological Research, 1981- 2007

Editorial Board, Revista Latinoamericana de Filosofía, 1984-

Editorial Board, Cuadernos de Etica, 1985-

Editorial Board, Estudios Lulianos, 1987-95

Editorial Board, SUNY Press, 1985-88

Editor, Newsletter of Society for Medieval and Renaissance Philosophy, 1986-89

Editorial Board, Analogía: Revista de Filosofía, 1987-

Advisory Board, American Catholic Philosophical Quarterly, formerly The New Scholasticism, 1989-2000, 2012-2015

Coordinating Board, Concordia (Aachen), 1989-

Editorial Board, Medievalia, 1991-

Editorial Board, Philosophia Scientifica, 1991- 95

In charge of U.S. section of Anuario Bibliográfico de Historia del Pensamiento Ibero e Iberoamericano, 1988-94

Collaborating Editor, Handbook of Ontology/Handbook of Metaphysics

Editor, SUNY Series in Latin American and Iberian Thought and Culture, 1988-

Editorial Board, Catholic University of America Press Series "Thomas Aquinas in Translation," 1990-

Guest-Editor, Issue of Topoi on "The Transcendentals in the Middle Ages," 1992

Advisory Board, Sorites, 1995-2000

Editorial Board, Tópicos, 1995-

Consejo Asesor, Utopía y Praxis Latinoamericana, 1996-

Editorial Board, Essays in Philosophy: A Biannual Journal, 1998-2009

Editorial Board, Devenires, 2000-

Editorial Board, Medieval Philosophy Series, Ashgate Press, John Marenbon General Editor

Editorial Board, CR: The New Centennial Review, 2000-

Editorial Board, Quaestio: Annuario di Storia della Metafisica, 2001-

Editorial Board, Stanford Encyclopedia of Philosophy, 2006-

Editorial Board, Inter-American Journal of Philosophy, 2009-

Editorial Board, EIDE: Foundation of Ontology series, Ontos Verlag and later DeGruyter, 2009-May 31, 2014

Board of Editorial Advisers, Studia Neo-Aristotelica, 2010-

Editorial Board, Critical Philosophy of Race, 2011-2014

Editorial Board, Philosophia Practica, 2012-

Guest Editor, American Philosophical Quarterly, 2014

Editorial Board, Brill Series on Metaphysics, G. Klima general editor, 2015-