Dallas Willard (1935-2013) was a Professor in the School of Philosophy at the University of Southern California in Los Angeles from 1965 to 2012. He also lectured and published in religion. Knowing Christ Today, The Great Omission, Renovation of the Heart, The Divine Conspiracy, The Spirit of the Disciplines, and Hearing God first appeared as In Search of Guidance. He served on the boards of the C.S. Lewis Foundation, the Templeton Foundation and Biola University, and was a member of numerous evaluation committees for the Western Association of Schools and Colleges.