“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