Peter Kreeft, Ph.D., Distinguished Fellow of the Principium Institute, is Professor of Philosophy at Boston College, where he has taught since 1965. He earned his Ph.D. in Philosophy from Fordham University. He loves his five grandchildren, four children, one wife, one cat, and one God. His 75 books include: Catholics and Protestants: What Can We Learn from Each Other? (Ignatius Press, 2017); I Burned for Your Peace: Augustine’s Confessions Unpacked (Ignatius Press, 2016); How to Be Holy: First Steps in Becoming a Saint (Ignatius Press, 2016); Practical Theology: Spiritual Direction from St. Thomas Aquinas (Ignatius Press, 2014); Letters to an Atheist: Wrestling with Faith (Sheed & Ward, 2014); Jacob’s Ladder: Ten Steps to Truth (Ignatius Press, 2013); An Ocean Full of Angels: The Autobiograph of ‘Isa Ben Adam (St. Augustine’s Press, 2011); Handbook of Catholic Apologetics (with Ronald Tacelli; Ignatius Press, 2009); Because God is Real: Sixteen Questions, One Answer (Ignatius Press, 2008); The Journey: A Spiritual Roadmap for Modern Pilgrims (InterVarsity Press, 1996); Christianity for Modern Pagans (Ignatius Press, 1993); Three Philosophies of Life (Ignatius Press, 1989); and Fundamentals of the Faith (Ignatius Press, 1988). For more information you can go to his website.