Every system of philosophy must tell us whether it thinks true knowledge to be possible. Or if a system of philosophy thinks it impossible for man to have a true knowledge of the whole of reality or even of a part of reality, it must give good reasons for thinking so. From these considerations, it follows that if we develop our reasons for believing that a true knowledge of God and, therefore, also of the world, is possible because actually given in Christ, we have in fact given what goes in philosophy under the name of epistemology. It will then be possible to compare the Christian epistemology with any and with all others. And being thus enabled to compare them all, we are in a position and placed before the responsibility of choosing between them. And this choosing can then, in the nature of the case, no longer be a matter of artistic preference. We cannot choose epistemologies as we choose hats. Such would be the case if it had been once for all established that the whole thing is but a matter of taste. But that is exactly what has not been established. That is exactly the point in dispute.
– Cornelius Van Til, A Survey of Christian Epistemology p.xiii-xiv