Professor of Philosophy (Research Focus), University of Pretoria

Professor, Tansian University, Nigeria & President Association For the Promotion of African …

Stellenbosch University

Emeritus Professor of Philosophy

Professor of Philosophy, Department of Philosophy, University of Pretoria

Professor of Philosophy, University of Calabar

Kent State University

University of Pretoria

University of Cambridge

Full Professor of Philosophy and History of Education ,Sol Plaatje University