This dialogue with an imaginary unbeliever is the very personal witness of a scholar and teacher who through his writings and students has changed the pattern of the defense of the Christian faith in our time. Worshiping the Sovereign Creator and Redeemer, Dr. Cornelius Van Til has pressed the demands of the Word of God upon all human thought and action. He has shown the disastrous implications of accepting the assumptions of unbelief and then trying to prove to the unbeliever that Christianity is possibly or even probably true. Instead, he lays claim in the name of the living God to alt truth. Apart from God the Creator, there can be neither meaning nor existence for man the creature. God is the fountain of life and light, the Alpha and Omega in whose light we see light.