Gregory Koukl holds MA degrees with honors in both apologetics and philosophy. He's spoken on over 80 university campuses and hosted his own call-in radio talk show for over 33 years defending "Christianity worth thinking about." Greg is founder and president of Stand to Reason (str.org) and serves as adjunct professor of Christian apologetics at Biola University. He is the author of the award-winning The Story of Reality and the best-selling Tactics.