Carlton Wynne, Lane Tipton, and Camden Bucey open Cornelius Van Til's book, The Defense of the Faith to pages 40–43, in which Van Til describes the Christian philosophy of reality. While to some degree it is necessary to use categories of God, man, and universe common to unbelievers in order to engage them apologetically and to evangelize, Christians must clearly set forth the distinctly Christian philosophy of reality. Van Til commences that work in chapter two and promptly addresses eternal unity and plurality with regard to the problem of the one and many.