We have, then, the two Powers set forth as two Vicegerences of God, in the government of His human world: the temporal Vicegerency belonging to each sovereignty for the country which it rules, so far as the sphere of that sovereignty extends; the Spiritual Vicegerency belonging to His one spiritual kingdom in all times and places in the sphere of its sovereignty.

3. Here we are in presence of two societies, the authority in each of which is a divine Vicegerency, whose subject is the same man, whether individual or collective. The one is the minister of God for good to man in all his natural relations in every country; the other is the very authority of the Incarnate God Himself, unlimited as to time and place, over the same man in all his supernatural relations. Not only do both represent God, but both govern the same man. These two conditions fix what is the divinely intended relation between them. It cannot but be one of amity. As these powers existed in the beginning they were united even as to the person bearing them. The great sin of unfaithfulness to God in the race caused them to be placed in different bearers. Amid all the corruption which ensued, as to worship on the one hand, as to civil government on the other, the two Powers never ceased to be in amity with each other. For the basis of this amity is, in truth, a condition of human nature which never varies, being, in fact, the subjection of man’s natural life to his supernatural end. As long as man is sent into this world for the purpose of trial, to live in another world an endless life, the quality of which shall be determined by his conduct as a free moral agent in this life, so long the power which rules him in reference to the concerns of this life is bound to live in amity with the power which rules him as to the concerns of that future life. This, on the one hand, being the reason for amity in man himself; on the other hand, both Powers proceeding from the same God. must be intended by Him to work in harmony. He has no more made them rivals in the government of His moral world, than He has made the sun and moon rivals in the physical enlightenment of the earth, and the government of its motions.

To illustrate further the necessity of amity between the two Powers for the good of man’s life, let us consider three other relations which have been conceived as possible to exist.

4. A separate action of the two Powers in their respective spheres, that is, a complete division between Church and State, has been imagined by some as feasible and desirable. But with regard to this it must be observed that the two Powers rule over one human commonwealth, whether that be viewed as existing within the limit of any particular state, or as spread over the whole world. Again, that they rule conjointly over both soul and body. For, if we use accurate language, it is not as if the Church ruled over the soul, and the State over the body. It is, indeed, true that, in order to bring home the relative importance of the two ends pursued by the two Powers, this illustration has been constantly used, by the Fathers first, and by other writers afterwards; but it is only an illustration, not an accurate statement of a real relation. They rule, in fact, over both soul and body, but in different relations; the State over soul and body as to their natural end, the Church over soul and body as to their supernatural end. The State’s rule is over all those things which are ordered for the tranquillity and stability of human society; the Church’s rule is over all those things which concern the salvation of souls, all those things which fall under the domain of her priesthood, her teaching, and her jurisdiction. It is obvious that both these classes of things belong both to soul and body. How, for instance, can rule over the soul be denied to the State if it can demand of its subjects, for the defence of country, the sacrifice of life, in which the condition of the soul as well as that of the body is involved? How can rule over the body be denied to the Church, when the body enters into every act of worship and receives the sacraments?—when the inward belief requires to be testified by word and deed, in order to confess Christ before men?

The Temporal Power, therefore, rules over all temporal matters, that is, those which concern natural right and man’s natural end; the Spiritual Power rules over spiritual things, those which concern man’s supernatural end. Can the former perform rightly the duties which belong to it without considering the rights appertaining to the latter?

To answer this question, let us take the case of the individual man. Is it possible for a man rightly to perform his duties to the State without consideration of his duties to God? As we have before seen, all the duties of man in life are subject to his supernatural end. Every particle of natural right rests upon the authority of God the Creator; and if God has created man for a supernatural end, to discharge the civil duties of life without regard to that end is simple impiety. It is plain that, according to the intention of God, every part of man’s natural life has been ordered with a view to the end of his supernatural life.

But in this the case of the individual in no respect differs from the case of the collective mass. The State has been created with a view to the ultimate end of man as much as the individual. In fact, the cause of its creation was to establish an order in human things which should help man continually to attain that end. It was not created for itself. The society of man in this life is not the ultimate fact. Once more; the Fall, the Deluge, and the Dispersion have uttered three voices upon that truth which can never be silenced, which have echoed through the whole world and touch all human nature. The State, then, as much as the individual, must perform all which it is intended to perform in the government of man, in obedience to the principle that man’s present life is ordered with a view to his future life.

To apply this more particularly, it means that the State, in its administration of all temporal things, is bound incessantly to have regard to the free exercise by the Spiritual Power of its authority over spiritual things. It must allow that power to administer the whole work of the priesthood, and the whole work of the teaching, with that liberty of internal government which constitutes its jurisdiction, the seat of its royalty. It is not the place here to enumerate in detail how much that involves. It is enough to say that the ordinary action of the State and the ordinary action of the Church run daily into each other, as being concerned with the same man and the same society of men; and accordingly, that the allowing such a liberty to the Church by the State carries with it great consideration and regard for the Church by the State. But such a consideration and regard are quite incompatible with separate action of the two Powers in their respective spheres. An instance in point would be the State compelling a subject, who is a minister of the Church, to become a soldier. It is a purely natural right of the State to require the service of the subject for such a purpose. It is a purely spiritual right of the Church to have the use of her ministers for her own work. The use of the former right without consideration of the latter would constitute a separate action of the State in its sphere. But it would be at the same time an act of the utmost hostility on the part of the State to the Church. And other instances of the same kind present themselves through the whole domain of things which, in themselves, are purely temporal or purely spiritual. Besides these there is the class of mixed things, and, as one of them, let us take education.

Education, so far as it embraces instruction in the several arts and sciences which subserve man’s natural life, belongs to the domain of the State; so far as it embraces the formation of the spiritual character in man, which includes instruction in religion, and that not only as it concerns dogma, but also philosophy and science, belongs to the domain of the Church. If the State exercises its natural right over education with regard to the former, without allowing the supernatural right of the Church over the latter, which in itself would be no more than a separate action in its own sphere, it would constitute, at the same time, a complete infringement of the Church’s rights in her spiritual power of teaching and jurisdiction.

This is enough to show that the separate action of the two Powers in their respective spheres leads to the disjunction of man’s natural life from his supernatural end. This was not the intention of God in creating the two Powers, and placing man’s life under their joint government.