“Just as it is not at all a matter of indifference whether a man be a murderer or a respectable citizen, even though from the point of view of Christianity both will be lost forever unless brought to Christ, so it is not a matter of indifference whether a man have a high or a low form of non-Christian interpretation. It is true that a man who misses a train by a minute has missed it as well as the one who has missed it by an hour, yet we give a great deal more credit to the man who missed it only by a minute than to the man who missed it by an hour. We rejoice when men are “not far from the kingdom of heaven” even though they are not in the kingdom. But all this only brings out the more strikingly the fact that the sinner’s knowledge frustrates itself. Knowing God as well as he does, that is, coming-in the form of his interpretation so near to the truth, he yet refuses to accept the truth in its full significance. It is of this self-frustration that Paul speaks particularly in Romans 1:18–21:
For the wrath of God is revealed from heaven against all ungodliness and unrighteousness of men, who hold down the truth in unrighteousness: because that which may be known of God is manifest in them; for God manifested it to them. For the invisible things of him since the creation of the world are clearly seen, being perceived through the things that are made, even his everlasting power and divinity; that they may be without excuse: because that, knowing God, they glorified him not as God, neither gave thanks; but became vain in their reasonings, and their senseless heart was darkened.”
– Cornelius Van Til, An Introduction to Systematic Theology p.165
“The Reformed method of apologetics seeks to escape this nemesis. It begins frankly ‘from above.’ It would ‘presuppose’ God. But in presupposing God it cannot place itself at any point on a neutral basis with the non-Christian. Before seeking to prove that Christianity is in accord with reason and in accord with fact, it would ask what is meant by ‘reason’ and what is meant by ‘fact.’ It would argue that unless reason and fact are themselves interpreted in terms of God they are unintelligible. If God is not presupposed, reason is a pure abstraction that has no contact with fact, and fact is a pure abstraction that has no contact with reason. Reason and fact cannot be brought into fruitful union with one another except upon the presupposition of the existence of God and his control over the universe.
Since on the Reformed basis there is no area of neutrality between the believer and the unbeliever, the argument between them must be indirect. Christians cannot allow the legitimacy of the assumptions that underlie the non-Christian methodology. But they can place themselves upon the position of those whom they are seeking to win to a belief in Christianity for the sake of the argument. And the non-Christian, though not granting the presuppositions from which the Christian works, can nevertheless place himself upon the position of the Christian for the sake of the argument.”
– Cornelius Van Til, A Christian Theory of Knowledge p.18
“The charge is made that we engage in circular reasoning. Now if it be called circular reasoning when we hold it necessary to presuppose the existence of God, we are not ashamed of it because we are firmly convinced that all forms of reasoning that leave God out of account will end in ruin. Yet we hold that our reasoning cannot fairly be called circular reasoning, because we are not reasoning about and seeking to explain facts by assuming the existence and meaning of certain other facts on the same level of being with the facts we are investigating, and then explaining these facts in turn by the facts with which we began. We are presupposing God, not merely another fact of the universe. If God is to come into contact with us at all it is natural that the initiative must be with him. And this will also apply to the very question about the relation of God to us. Accordingly, it is only on God’s own testimony that we can know anything about him.”
– Cornelius Van Til, A Survey of Christian Epistemology p.201
See also: The Charge of Circular Reasoning and Spiral Reasoning
“For this reason we have spoken of the Christian theistic method as the method of implication into the truth of God. It is reasoning in a spiral fashion rather than in a linear fashion. Accordingly, we have said that we can use the old terms deduction and induction if only we remember that they must be thought of as elements in this one process of implication into the truth of God. If we begin the course of spiral reasoning at any point in the finite universe, as we must because that is the proximate starting point of all reasoning, we can call the method of implication into the truth of God a transcendental method. That is, we must seek to determine what presuppositions are necessary to any object of knowledge in order that it may be intelligible to us. It is not as though we already know some facts and laws to begin with, irrespective of the existence of God, in order then to reason from such a beginning to further conclusions. It is certainly true that if God has any significance for any object of knowledge at all, the relation of God to that object of knowledge must be taken into consideration from the outset. It is this fact that the transcendental method seeks to recognize.”
– Cornelius Van Til, A Survey of Christian Epistemology p.201
“The sinner’s problem from his point of view is to cast doubt upon this evidence, to make it appear as though the evidence were not clear. With the rich man who lifted up his eyes in torment, it is the effort of every man to put the blame for his failure to serve God upon the elusive character of the evidence for God’s existence. If he could rightly say that God has to be diligently searched for, that he might possibly be hidden in some remote corner of the earth, or moon or Jupiter, then he would have an excuse for his ignorance. Following Paul, the Reformed theologian, and he alone, will stress the inescapable character of the revelation of God.”
– Cornelius Van Til, An Introduction to Systematic Theology p.268
“With such as these it would seem that the point we should be most anxious to drive home is that in trying to be agnostic, and in trying to say that they have no need of metaphysics, they have already given one of the two possible answers to every question of epistemology that may be asked. They have, as a matter of fact, said that all the facts—or, in epistemological language, they have said that the object and the subject of knowledge—exist apart from God and are able to get along without God. They think they have said nothing at all about ultimate matters, while as a matter of fact they have in effect said everything that could be said about them, and, we believe, more beside. They have tried to be so modest that they did not dare to make a positive statement about anything ultimate, while they have made a universal negative statement about the most ultimate consideration that faces the mind of man. That this charge is fair is apparent from the consideration of the opposite. Suppose that the object and the subject of knowledge do not exist apart from God. Suppose, in other words, that the Christian theistic conception of philosophy is true. In that case, it is not only possible to know something about ultimate things, but in that case the knowledge of proximate things depends upon the knowledge of ultimate things. In that case, not a single fact can be known unless God is known.
What the present-day agnostic should do then is to make his position reasonable by showing that God does not exist. The burden of the proof is upon him. He claims, of course, that the burden of the proof is upon us when we hold that God exists. Yet this is clearly not the case, since his own position, to be reasonable, must presuppose the non-existence of God. If God does exist, man can know him, for the simple reason that in that case all knowledge depends upon him. Hence an agnostic position must first prove that God does not exist.
From these considerations it follows that agnosticism is completely self-contradictory. And it is self-contradictory not only upon the assumption of the truth of theism, but it is self-contradictory upon the assumption of the truth of antitheism, which is the assumption of agnosticism.”
– Cornelius Van Til, A Survey of Christian Epistemology p.212-213
“A truly Protestant method of reasoning involves a stress upon the fact that the meaning of every aspect or part of Christian theism depends upon Christian theism as a unit. When Protestants speak of the resurrection of Christ they speak of the resurrection of him who is the Son of God, the eternal Word through whom the world was made. The truth of theism is involved in this claim that Christians make with respect to the domain of history. And what is true of the resurrection of Christ is true with respect to all the propositions about historical fact that are made in Scripture. No proposition about historical fact is presented for what it really is till it is presented as a part of the system of Christian theism that is contained in Scripture. To say this is involved in the consideration that all facts of the created universe are what they are by virtue of the plan of God with respect to them. Any fact in any realm confronted by man is what it is as revelational through and through of the God and of the Christ of Christian theism.”
– Cornelius Van Til, The Defense of the Faith p.136
“The two systems, that of the non-Christian and that of the Christian, differ because of the fact that their basic assumptions or presuppositions differ. On the non-Christian basis man is assumed to be the final reference point in predication. Man will therefore have to seek to make a system for himself that will relate all the facts of his environment to one another in such a way as will enable him to see exhaustively all the relations that obtain between them. In other words, the system that the non-Christian has to seek on his assumption is one in which he himself virtually occupies the place that God occupies in Christian theology. Man must, in short, be virtually omniscient. He must virtually reduce the facts that confront him to logical relations; the “thingness” of each thing must give up its individuality in order that it may be known; to be known, a thing or fact must be wholly known by man…
The system that Christians seek to obtain may, by contrast, be said to be analogical. By this is meant that God is the original and that man is the derivative. God has absolute self-contained system within himself. What comes to pass in history happens in accord with that system or plan by which he orders the universe. But man, as God’s creature, cannot have a replica of that system of God. He cannot have a reproduction of that system. He must, to be sure, think God’s thoughts after him; but this means that he must, in seeking to form his own system, constantly be subject to the authority of God’s system to the extent that this is revealed to him.”
– Cornelius Van Til, A Christian Theory of Knowledge p.15-16
“Reformed theology holds to the self-sufficiency of God without compromise. It therefore rejects every form of human autonomy. Only on the assumptions of divine self-sufficiency and man’s complete dependence upon God can the difference between the Christian and the non-Christian points of view be clearly made out. Only thus can the issue be clearly drawn. The non-Christian assumes that man is ultimate, that is, that he is not created. Christianity assumes that man is created. The non-Christian assumes that the facts of man’s environment are not created; the Christian assumes that these facts are created. The Christian has derived his convictions on these matters from Scripture as the infallible Word of God. As self-explanatory, God naturally speaks with absolute authority. It is Christ as God who speaks in the Bible. Therefore the Bible does not appeal to human reason as ultimate in order to justify what it says. It comes to the human being with absolute authority. Its claim is that human reason must itself be taken in the sense in which Scripture takes it, namely, as created by God and as therefore properly subject to the authority of God.”
– Cornelius Van Til, A Christian Theory of Knowledge p.14-15