Unlike many of Van Til's works, very little dynamite is needed to unearth the theological gold. If there is no God, then all would be chance and, thus, every fact would be brute - unintelligible. Therefore the denial of God presupposes God. The only condition where the denial of the atheist would make sense and be credible is in a world created by God. Also, Christianity is not just opposed to the non-Christian doctrine of salvation, but against his entire worldview.
All unbelievers presuppose their non-createdness and, thus, autonomy.
They presuppose that the human mind can function whether God exists or not. All the Van Tilian one-liners are here. Throughout the volume Bahnsen allows Van Til to lecture us himself. From the outset the presuppositional apologetic is championed. Bahnsen also compares Van Til's system to other Reformed men such as R. C. Sproul, John Frame, etc.