The votaries of each are certain that it is to be found in their fields, either partially, or completely. The perfect attainment of all facts prepares for the exactness of scientific knowledge. The absence of any must make the knowledge incomplete. The proper generalization of all is essential in this, as in all other kinds of science. A full knowledge of all the facts, and a perfect generalization of them, will constitute theology an exact science.
Theology is also as sensitive to the absence of facts as is any other science.
The astronomer finds that his calculations, based upon correct theories, are not exactly verified, and at once suspects the presence of some disturbing body as the cause of this variation. So, also, in theology. The omission of a single fact, however small, must affect the whole universe of doctrine. The common mind does not perceive this, and hence is not prepared to value the discovery of the new fact. But the theologian finds in the new and more exact adjustment, thus made possible, the proof of the truth of his whole system, and therefore prizes it, even sometimes beyond what he ought.