Douglas Groothuis (PhD, University of Oregon) is distinguished research professor of apologetics and Christian worldview at Cornerstone University. He previously served as professor of philosophy at Denver Seminary in Denver, Colorado. He has published articles in Philosophia Christi, Themelios, Christian Scholars Review, Inquiry, and Journal of the Evangelical Theological Society, as well as The Christian Research Journal, World Magazine, and The Worldview Bulletin. He is the author of numerous books, including Christian Apologetics: A Comprehensive Case for Biblical Faith, and lives in Michigan.