We wish to state distinctly and openly, at the outset of this work, that the solution given of the problems therein discussed is a solution derived from the Catholic faith. Its sole object will be to make an exposition of the doctrines of the Catholic faith bearing on these problems. By an exposition, is not meant a mere expansion or paraphrase of the articles of the Creed, but such a statement as shall include an exhibition of their positive, objective truth, or conformity to the real order of being and existence; and of their reasonableness or analogy to the special part of that universal order lying within the reach of rational knowledge. In doing this we choose what appears to us the best and simplest method. It differs, however, in certain respects, from the one most in vogue, and therefore requires a few preliminary words of explanation. The usual method is, to proceed as far as possible in the analysis of the religious truths provable by reason, to introduce afterward the evidences of revealed religion, and finally to proceed to an exposition of revealed doctrines. We have no wish to decry the many valuable works constructed on this plan, but simply to vindicate the propriety of following another, which is better suited to our special purpose. We conceive it not to be necessary to follow the first method in explaining the faith of a Christian mind, because the Christian mind itself does not actually attain to faith by this method. We do not proceed by a course of reasoning through natural theology and evidences of revelation to our Christian belief. We begin by submitting to instruction, and receiving all it imparts at once, without preliminaries. The Christian child begins by saying "Credo in Unum Deum." This is the first article of his faith. It is proposed to him, by an authority which he reveres as divine, as the first and principal {146} article of a series of revealed truths. If that act is right and rational, it can be justified on rational grounds. It can be shown to be in conformity to the real order. If it is in conformity to the real order, it is in conformity also to the logical order. The exposition of the real order of things is the exposition of truth, and is, therefore, sound philosophy. A child who has attained the full use of his reason and received competent instruction, either has, or has not, a faith; not merely objectively certain, but subjectively also, as certain and as capable of being rationally accounted for, though not by his own reflection, as that of a theologian. If he has this subjective certitude, a simple explication of the creditive act in his mind will show the nature and ground of it in the clearest manner. If he has not, children and simple persons who are children in science, _i.e._, the majority of mankind, are incapable of faith--a conclusion which oversets theology.