Margaret Diddams (PhD, NYU) is an industrial-organizational psychologist, former provost and chief academic officer of Wheaton College, and a former senior manager at Microsoft. A sought-after consultant, she has worked closely with Christian leaders navigating the challenges of leading teams, using power wisely, burnout, and organizational development. Her writing—rooted in scholarship, professional experience, and hands-on consulting—focuses on redemptive leadership, vocational calling, virtue ethics, and the formation of Christian character in the workplace. Margaret is the editor and regular contributor to Christian Scholar’s Review and has held faculty roles at Columbia University, Seattle Pacific University, and Wheaton College. She offers deep insight into the crucibles of leadership and is committed to helping leaders lead not just effectively, but to develop their faith through leadership experiences. Margaret and her husband Stan live in Seattle. They have four children, three grandchildren, and a Boston Terrier.

Shirley A. Mullen (PhD, University of Minnesota; PhD, University of Wales) served as president of Houghton University for fifteen years. She spent four decades in the work of faith-based liberal arts education in various roles, including professorof history, provost, director of residence life, and president. As president emerita, she continues to write, speak and consult on themes related to her recent publication Claiming the Courageous Middle. Mullen’s earned doctorates in history and philosophy reflect her life-long interest in the Enlightenment and its complex impact on the modern world, on liberal learning, and on the intertwining of Christian calling and the legacy of humanism in the Western tradition. In addition to herwork in the classroom and as an administrator, she has served as president of the Conference of Faith and History, chair of the board of the Council of Christian Colleges and Universities, and chair of Jericho Road Community Health Center in Buffalo, New York. She currently serves as chair of the board of Fuller Seminary, and is a member of the boards of National Association of Evangelicals and First Amendment Partnerships.