“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
Calvin makes a sharp distinction between the revelation of God to man and man’s response to that revelation. This implies the rejection of a natural theology such as Aquinas taught.
He makes a sharp distinction between the responses to God’s revelation made by:
(a) man in his original condition, i.e., Adam before the Fall;
(b) mankind, whose “understanding is subjected to blindness and the heart to depravity” (Inst. II.i.9)
(c) those that are “taught of Christ” through Scripture and whose eyes have been opened by the Holy Spirit.
– Cornelius Van Til, The Reformed Pastor and the Defense of Christianity & My Credo p.24
Augustine of course stood squarely for the Pauline principle, having told us that the whole of history consisted of one deadly, no-give, no-take combat between two “cities,” that of God and that of man, the “citizens” of the former kingdom being in basic disagreement with those of the latter on the respective questions of the beginning, the middle, and the end of history. To be sure, citizens of the kingdom of God must not press upon those of the kingdom of man what Jesus said to the Pharisees, namely, that they be of their father, the devil, since only Jesus knew the heart of man. Thus, His followers may speak only of the two opposing principles activating men. Similarly, it is not possible for them to predict in each instance whether a certain individual belongs to one kingdom or the other, as history is never and nowhere a finished product. Nonetheless, there are two main and exclusive tendencies in it: men are in their hearts either for or against the Christ whom Paul preached, and what is in their hearts will usually find expression in the sympathies manifested by their actions.
– Cornelius Van Til, Who Do You Say That I Am p.33-34