Norman Leo Geisler (born July 21, 1932) is a Christian systematic theologian,philosopher, and apologist. He is the co-founder of two non-denominational Evangelical seminaries (Veritas Evangelical Seminary and Southern Evangelical Seminary). He holds a Ph.D. in philosophy from Loyola University and is well known for his scholarly contributions to the subjects of classical Christian apologetics, systematic theology, the history of philosophy, philosophy of religion, the creationism and evolution debate, Calvinism, Roman Catholicism, biblical inerrancy, Bible difficulties, ethics, and more. He is the author, coauthor, or editor of over 90 books and hundreds of articles.
Geisler is a conservative evangelical scholar who has written a four-volume systematic theology.
He is a strong defender of the full inerrancy of the Bible, being one of the co-founders and framers of the “Chicago Statement of Biblical Inerrancy" (1978) and editor of the book Inerrancy (Zondervan, 1978). More recently co-authoredDefending Inerrancy with William Roach (Baker, 2013). He also co-authored (with William Nix) General Introduction to the Bible (Moody Press, 1986) and From God to Us, revised (Moody, 2012).
Geisler considers himself a “moderate Calvinist," as expressed in his book Chosen but Free (Harvest House, 2001) andSystematic Theology, in One Volume (Harvest House, 2012). On the Five Points of Calvinism, he believes: