Dallas Willard (1935-2013) was a renowned teacher, an acclaimed writer and one of our most brilliant Christian thinkers. He was as celebrated for his enduring writings on spiritual formation as he was for his scholarship, with a profound influencein the way he humbly mentored so many of today's leaders in the Christian faith. His books include The Divine Conspiracy (a Christianity Today Book of the Year), The Spirit of the Disciplines, Hearing God, Renovation of the Heart, and others.

James Bryan Smith is the author of The Good and Beautiful Series. He is a theology professor at Friends University in Wichita, Kansas, where he also serves as the director of the Apprentice Institute for Christian Spiritual Formation. A founding member of Richard J. Foster's spiritual renewal ministry, Renovaré, Smith is an ordained United Methodist Church minister and has served in various capacities in local churches.