Christian Theory of Knowledge

Van Til's systematic exposition of presuppositional apologetics emerged from decades of teaching at Westminster Theological Seminary and his conviction that traditional Christian apologetics had conceded too much ground to secular philosophy. Writing against the backdrop of twentieth-century challenges to Christian faith from logical positivism and existentialism, Van Til argued that believers needed a fundamentally different approach to knowledge itself, one that began with God's self-revelation rather than supposedly neutral rational foundations.

The work develops Van Til's central claim that all human knowledge depends on presuppositions about the nature of reality, and that only Christian theism provides a coherent foundation for rational thought. He argues that the triune God revealed in Scripture is the necessary precondition for logical reasoning, scientific investigation, and moral knowledge. Van Til critiques both classical apologetics, which attempts to prove God's existence through rational argument, and evidential apologetics, which marshals historical and scientific evidence for faith. Instead, he contends that unbelievers suppress their innate knowledge of God and construct autonomous systems of thought that ultimately collapse into skepticism or irrationality. The Christian apologist's task is not to meet unbelievers on allegedly neutral ground but to expose the internal contradictions of non-Christian worldviews while demonstrating that Christian theism alone makes sense of human experience.

Van Til's approach has profoundly influenced Reformed apologetics, spawning both devoted followers and sharp critics within evangelical circles. His emphasis on worldview analysis and the impossibility of religious neutrality has shaped contemporary discussions of faith and reason, particularly in Reformed theological education and popular apologetics ministries. Who should read this: Students of apologetics seeking to understand presuppositionalism and its alternatives, along with pastors and theologians wrestling with how Christian faith relates to secular philosophy. Those looking for traditional rational proofs for God's existence or comfortable with evidentialist approaches may find Van Til's radical claims about the noetic effects of sin unnecessarily provocative.