We may also be more tolerant, and overthrow this falsehood by drawing a distinction. This way of distinction is a gentler way of treating an adversary, for so his arguments are not made to appear consciously false, as is the case when we utterly overthrow him. I say then that, although the moon has not light of its own abundantly, unless it receives it from the sun, yet it does not therefore follow that the moon is from the sun. Therefore be it known that the being, and the power, and the working of the moon are all different things. For its being, the moon in no way depends on the sun, nor for its power, nor for its working, considered in itself. Its motion comes from its proper mover, its influence is from its own rays. For it has a certain light of its own, which is manifest at the time of an eclipse; though for its better and more powerful working it receives from the sun an abundant light, which enables it to work more powerfully.
Therefore I say that the temporal power does not receive its being from the spiritual power, nor its power which is its authority, nor its working considered in itself. Yet it is good that the temporal power should receive from the spiritual the means of working more effectively by the light of the grace which the benediction of the Supreme Pontiff bestows on it both in heaven and on earth. Therefore we may see that the argument of these men erred in its form, because the predicate of the conclusion is not the predicate of the major premiss. The argument runs thus: The moon receives her light from the sun, which is the spiritual power. The temporal power is the moon. Therefore the temporal power receives authority from the spiritual power. "Light" is the predicate of the major premiss, "authority" the predicate of the conclusion; which two things we have seen to be very different in their subject and in their idea.
V.—They draw another argument from the text of Moses, saying that the types of these two powers sprang from the loins of Jacob, for that they are prefigured in Levi and Judah, whereof one was founder of the spiritual power, and the other of the temporal. From this they argue: the Church has the same relation to the Empire that Levi had to Judah. Levi preceded Judah in his birth, therefore the Church precedes the Empire in authority.
This error is easily overthrown. For when they say that Levi and Judah, the sons of Jacob, are the types of spiritual and temporal power, I could show this argument, too, to be wholly false; but I will grant it to be true. Then they infer, as Levi came first in birth, so does the Church come first in authority. But, as in the previous argument, the predicates of the conclusion and of the major premiss are different: authority and birth are different things, both in their subject and in their idea; and therefore there is an error in the form of the argument. The argument is as follows: A precedes B in C; D and E stand in the same relation as A and B; therefore D precedes E in F. But then F and C are different things. And if it is objected that F follows from C, that is, authority from priority of birth, and that the effect is properly substituted for the cause, as if "animal" were used in an argument for men, the objection is bad. For there are many men, who were born before others, who not only do not precede those others in authority, but even come after them: as is plain where we find a bishop younger than his archpresbyters. Therefore their objection appears to err in that it assumes as a cause that which is none.
VI.—Again, from the first book of Kings they take the election and the deposition of Saul; and they say that Saul, an enthroned king, was deposed by Samuel, who, by God's command, acted in the stead of God, as appears from the text of Scripture. From this they argue that, as that Vicar of God had authority to give temporal power, and to take it away and bestow it on another, so now the Vicar of God, the bishop of the universal Church, has authority to give the sceptre of temporal power, and to take it away, and even to give it to another. And if this were so, it would follow without doubt that the authority of the Empire is dependent on the Church, as they say.
But we may answer and destroy this argument, by which they say that Samuel was the Vicar of God: for it was not as Vicar of God that he acted, but as a special delegate for this purpose, or as a messenger bearing the express command of his Lord. For it is clear that what God commanded him, that only he did, and that only he said.
Therefore we must recognise that it is one thing to be another's vicar, and that it is another to be his messenger or minister, just as it is one thing to be a doctor, and another to be an interpreter. For a vicar is one to whom is committed jurisdiction with law or with arbitrary power, and therefore within the bounds of the jurisdiction which is committed to him, he may act by law or by his arbitrary power without the knowledge of his lord. It is not so with a mere messenger, in so far as he is a messenger; but as the mallet acts only by the strength of the smith, so the messenger acts only by the authority of him that sent him. Although, then, God did this by His messenger Samuel, it does not follow that the Vicar of God may do the same. For there are many things which God has done and still does, and yet will do through angels, which the Vicar of God, the successor of Peter, might not do.
Therefore we may see that they argue from the whole to a part, thus: Men can hear and see, therefore the eye can hear and see: which does not hold. Were the argument negative, it would be good: for instance, man cannot fly, therefore man's arm cannot fly. And, in the same way, God cannot, by his messenger, cause what is not to have been,[290] as Agathon says; therefore neither can his Vicar.
VII.—Further, they use the offering of the wise men from the text of Matthew, saying that Christ accepted from them both frankincense and gold, to signify that He was lord and ruler both of things temporal and of things spiritual; and from this they infer that the Vicar of Christ is also lord and ruler both of things temporal and of things spiritual; and that consequently he has authority over both.
To this I answer, that I acknowledge that Matthew's words and meaning are both as they say, but that the inference which they attempt to draw therefrom fails, because it fails in the terms of the argument. Their syllogism runs thus: God is the lord both of things temporal and of things spiritual, the holy Pontiff is the Vicar of God; therefore he is lord both of things temporal and of things spiritual. Both of these propositions are true, but the middle term in them is different, and four terms are introduced, by which the form of the syllogism is not kept, as is plain from what is said of "the syllogism simply."[291] For "God" is the subject of the major premiss, and "the Vicar of God" is the predicate of the minor; and these are not the same.