Professor Emeritus, James Madison University

Professor of Planning, Groningen University, Faculty of Spatial Sciences

Professor of Philosophy, Princeton University

Doha Institute for Graduate Studies

Norwegian University of Science and Technology

Rutgers University, New Brunswick

Professor of Sociology of Religion, University of Lausanne

Department of Philosophy, University of Maryland, College Park

Professor, Università degli Studi di Torino

Department of Psychology, Laboratory for Experimental Psychology, University of Belgrade