Barry L. Callen is University Professor Emeritus of Christian Studies at Anderson University, Editor of Anderson University Press and the Wesleyan Theological Journal, and Special Assistant to the General Director of Church of God Ministries. A college and seminary dean and professor at Anderson University for thirty-nine years, Dr. Callen has authored thirty-five books, including his autobiography A Pilgrim’s Progress (2008). Recent other volumes include: Discerning the Divine (Westminster/John Knox 2004); Authentic Spirituality (Baker Academic/Emeth Press 2001, 2006); and The Scripture Principle, with Clark Pinnock (Baker Academic/Emeth Press 2006, 2009). He holds academic degrees from Geneva College, Anderson University, Asbury Theological Seminary, Chicago Theological Seminary, and Indiana University. He is a founding officer and current corporate secretary of Horizon International, a Christian ministry to AIDS orphans in Kenya, South Africa, Uganda, Zambia, and Zimbabwe.