Charles Taylor, Professor Emeritus of Philosophy, McGill University treats the term "secular" with several different meanings which, for a variety of reasons can't be simply ironed out and reduced to one, hence the inevitability of confusions and cross-purposes.
Charles Margrave Taylor, CC, GOQ, BA, MA, Ph.D, FRSC (born November 5, 1931) is a Canadian philosopher who has made significant contributions to political philosophy, philosophy of social science, and the history of philosophy. He is often classified as a communitarian, though he is uncomfortable with the label. He is a practicing Roman Catholic.
Taylor was educated at the McGill University (B.A. in History in 1952) and at Balliol College, Oxford (B.A. in Philosophy, Politics and Economics in 1955, M.A. in 1960, D.Phil in 1961), where he studied under Isaiah Berlin and G. E. M. Anscombe.
He succeeded John Plamenatz as Chichele Professor of Social and Political Theory in the University of Oxford and Fellow of All Souls College and was for many years Professor of Political Science and Philosophy at McGill University in Montreal, Canada, where he is now professor emeritus. Taylor is now Board of Trustees Professor of Law and Philosophy at Northwestern University. Many of his students have gone on to be important philosophers and political theorists.