Cardinal Francis Arinze, the former Prefect for the Congregation for Divine Worship, is a highly regarded prelate, teacher, and churchman. He has written numerous books on theology, spirituality, and prayer, including The Evangelizing Parish, Radical Discipleship, The Layperson's Distinctive Role, and his biography, God's Invisible Hand, all published by Ignatius Press.

Archbishop Salvatore Cordileone is the Archbishop of the San Francisco Archdiocese.

Fr. Joseph Fessio, SJ, is the founder and editor of Ignatius Press.

Peter Kreeft, PhD, Professor of Philosophy at Boston College, is one of the most respected Christian authors of our time. His many bestselling books cover a vast array of topics in spirituality, theology, and philosophy. They include How to Be Holy, Practical Theology, Back to Virtue, Because God Is Real, You Can Understand the Bible, Angels and Demons, Heaven: The Heart's Deepest Longing, and A Summa of the Summa.

Michael D. O'Brien, iconographer, painter, and writer, is the popular author of many best-selling novels including Father Elijah, Elijah in Jerusalem, The Father's Tale, Eclipse of the Sun, Sophia House, Theophilos, and Island of the World. His novels have been translated into twelve languages and widely reviewed in both secular and religious media in North America and Europe.

Steve Ray was raised in a devout and loving Baptist family. His father was a deacon and Bible teacher, and Stephen was very involved in the Baptist Church as a teacher of Biblical studies. After an in-depth study of the writings of the Church Fathers, both Steve and his wife Janet converted to the Catholic Church. He is the host of the popular, award-winning film series on salvation history, The Footprints of God. Steve is also the author of the best-selling books Crossing the Tiber and St. John's Gospel.

Robert J. Spitzer, SJ, PhD, is the former president of Gonzaga University and the founder of the Magis Center, which educates the public about the intersection of science, reason, and faith. He is the chief education officer of the Ethics and Performance Institute, which delivers web-based ethics education to corporations and individuals, and President of the Spitzer Center for Ethical Leadership, which delivers similar curricula to non-profit organizations. He is the author of Healing the Culture, Five Pillars of the Spiritual Life, and Ten Universal Principles.