Is there such a thing as “Christian logic”? Of course, says Vern Sheridan Poythress. A professor at Westminster Theological Seminary and the holder of six earned degrees, Poythress is a fair candidate for the title “genius.” His Logic: A God-Centered Approach to the Foundation of Western Thought (Crossway, 2013) is really two books. The first is a straightforward analysis of how the Christian view of logic differs from the non-Christian view. The second is a highly technical essay in symbolic logic that few logic professors and even fewer laymen can expect to understand. But the first part is so good that the entire book is worth buying....