If someone is serious about understanding what PA is, he must understand what Reformed Theology is. It’s that simple. The proper application of Reformed Theology in an apologetic context is what gives us the Presuppositional Apologetic.
Our goal is to set the presuppositional commitments of believer and unbeliever in antithesis – not to make a pseudo-cosmological argument. What we are concerned with is arguing by “presupposition” – not by “prime mover”. All too often, neophytes to the study of Reformed theology and its commensurate apologetic pack the baggage of non-Reformed theology and argumentation over into that sphere. This is not the “silver bullet” they think it is – it is, unfortunately, a simple error, and quite commonly made.
When we speak of the problem at hand, we are speaking of the ability of a worldview to provide the preconditions of intelligibility. This may be expressed in the context of several different subjects, but chiefly, it must be said that it is only being expressed in terms of entire worldviews. We are speaking of the “nature of facts”, not of the “facts themselves”, as if facts are simply “there”, and uninterpreted. When speaking of a worldview, you are speaking of everything the worldview posits – be it metaphysics, epistemology, or physics.
“Rather than wedding Christianity to the philosophies of Aristotle or Kant, we must openly challenge the apostate philosophic constructions of men by which they seek to suppress the truth about God themselves, and the world…It is only if we demand of men complete submission to the living Christ of the Scriptures in every area of their lives that we have presented to men the claims of the Lord Christ without compromise. It is only then that we are truly Biblical first and speculative afterwards. Only then are we working toward a Reformed apologetic.” – Cornelius Van Til
“In terms of theoretical principle and eventual outworking, the unbeliever opposes the Christian faith with a whole antithetical system of thought, not simply with piecemeal criticisms. His attack is aimed, not at random points of Christian teaching, but at the very foundation of Christian thinking. The particular criticisms which are utilized by an unbeliever rest upon his basic, key assumptions which unify and inform all of his thinking. And it is this presuppositional root which the apologist must aim to eradicate, if his defense of the faith is to be truly effective.” – Greg Bahnsen
“Christianity offers the triune God, the absolute personality, containing all of the attributes enumerated, as the God in whom we believe. This conception of God is the foundation of everything we hold dear. Unless we can believe in this sort of God, it does us no good to be told that we may believe in some other sort of God, or in anything else. For us everything depends for its meaning upon this sort of God. Accordingly, we are not interested to have anyone prove to us the existence of any other sort of God but this God. Any other sort of God is no God at all, and to prove that some other sort of God exists is, in effect, to prove that no God exists.” – Cornelius Van Til
“The apostle Paul lays great stress upon the fact that man is without excuse if he does not discover God in nature. Following Paul’s example Calvin argues that men ought to see God, not a god, not some supernatural power, but the only God, in nature. They have not done justice by the facts they see displayed before and within them if they say a god exists, or that Godprobably exists. The Calvinist holds to the essential perspecuity of natural as well as biblical revelation.” – Cornelius Van Til
William Edgar: What is Presuppositionalism?
K. Scott Oliphint: Covenantal Apologetics and the Doctrine of Scripture