Tim Muehlhoff (PhD, University of North Carolina, Chapel Hill) is professor of communication at Biola University in La Mirada, California, where he teaches classes in family communication, interpersonal communication, persuasion, and gender. Tim is senior director of the Winsome Conviction Project. His books include I Beg to Differ , Eyes to See , and Winsome Persuasion . Gregg A. Ten Elshof (PhD, University of Southern California) is professor of philosophy at Biola University. His areas of interest include metaphysics, epistemology, modern philosophy, and Confucianism. His book, I Told Me So: Self-Deception and the Christian Life won the Christianity Today 2009 Book Award for Christian Living. He is also author of Confucius for Christians .

Elshof has published articles in Midwest Studies in Philosophy , The Modern Schoolman , Grazer Philosophische Studien , The Journal of Philosophical Research , International Studies in Philosophy , Philosophia Christi, and Christian Scholar's Review .