Joseph C. McLelland is emeritus professor of McGill University and of The Presbyterian College, Montreal, and general editor of the Peter Martyr Library. His writings in philosophy and theology include The Visible Words of God: The Sacramental Theology of Peter Martyr Vermigli (1957) and The Life, Early Letters and Eucharistic Writings of Peter Martyr (with G. E. Duffield; 1989).