Greg Koukl is the founder and President of Stand to Reason, an organisation that trains Christians to think more clearly about their faith and to make an even-handed, incisive, yet gracious defense for classical Christianity and classical Christian values in the public square. He received his Masters in Philosophy of Religion and Ethics at Talbot School of Theology, graduating with high honors, and his Masters in Christian Apologetics from Simon Greenleaf University. He is an adjunct professor in Christian apologetics at Biola University. He is the author of Tactics—A Game Plan for Discussing Your Christian Convictions, Relativism: Feet Firmly Planted in Mid-Air with Francis J. Beckwith, and Precious Unborn Human Persons. He has hosted his own radio talk show for over 20 years advocating clear-thinking Christianity and defending the Christian worldview.