Knowledge based on experience leads to a system. Here we come to one of the features of all medieval thinking. The medieval thinkers knew that in order to think consistently, you must think systematically. In the term “systematic theology,” with which we are dealing in this institution, there is still the remnant of this insight, that knowledge, in order to be consistent, must have the character of a system. Today if somebody uses the word “system” ,except in this old fashioned phrase “systematic theology,” he is attacked, just because he thinks systematically and not sporadically and fragmentarily. But the Church cannot afford –- what every individual thinker can – -to have here an insight and there an insight which have nothing to do with each other, and usually contradict each other. But the Church needs something which is consistent, where everything has some connection with every other thing. The bad element in systematic theology is if you derive from principles, consequences which have no foundation in experience to which the Devine is present in sacramental terms. But this is not the meaning of “system.” The meaning of system is, to order experiences cognitively in such a way that they do not contradict each other, and that they give a whole of truth; for, as Hegel has rightly said, the truth is the whole.

Reason in this way can elaborate all religious experiences in rational terms. Even the doctrine of the Trinity can be dealt with rationally by reason, on the basis of experience. In other words, autonomous reason and the doctrine of the Church are identical. It is again to be compared with our relationship to nature, where we say: mathematical structure and natural reality belong to each other. The mathematical reason is able to grasp nature, to order and to make understandable natural movements and structures. In the same way theological reason is able to make understandable and to connect with each other the different religious experiences, which are not religious in the general sense, but experiences on the basis of the Christian tradition.