Whether Christ could use this knowledge by turning to phantasms?
Objection 1: It would seem that the soul of Christ could not understand by this knowledge except by turning to phantasms, because, as is stated De Anima iii, 18,31,39, phantasms are compared to man's intellective soul as colors to sight. But Christ's power of seeing could not become actual save by turning to colors. Therefore His intellective soul could understand nothing except by turning to phantasms.
Objection 2: Further, Christ's soul is of the same nature as ours. otherwise He would not be of the same species as we, contrary to what the Apostle says (Phil. 2:7) " . . . being made in the likeness of men." But our soul cannot understand except by turning to phantasms. Hence, neither can Christ's soul otherwise understand.
Objection 3: Further, senses are given to man to help his intellect. Hence, if the soul of Christ could understand without turning to phantasms, which arise in the senses, it would follow that in the soul of Christ the senses were useless, which is not fitting. Therefore it seems that the soul of Christ can only understand by turning to phantasms.
On the contrary, The soul of Christ knew certain things which could not be known by the senses, viz. separate substances. Therefore it could understand without turning to phantasms.
I answer that, In the state before His Passion Christ was at the same time a wayfarer and a comprehensor, as will be more clearly shown (Q 15, A 10). Especially had He the conditions of a wayfarer on the part of the body, which was passible; but the conditions of a comprehensor He had chiefly on the part of the soul. Now this is the condition of the soul of a comprehensor, viz. that it is nowise subject to its body, or dependent upon it, but wholly dominates it. Hence after the resurrection glory will flow from the soul to the body. But the soul of man on earth needs to turn to phantasms, because it is fettered by the body and in a measure subject to and dependent upon it. And hence the blessed both before and after the resurrection can understand without turning to phantasms. And this must be said of the soul of Christ, which had fully the capabilities of a comprehensor.
Reply to Objection 1: This likeness which the Philosopher asserts is not with regard to everything. For it is manifest that the end of the power of seeing is to know colors; but the end of the intellective power is not to know phantasms, but to know intelligible species, which it apprehends from and in phantasms, according to the state of the present life. Therefore there is a likeness in respect of what both powers regard, but not in respect of that in which the condition of both powers is terminated. Now nothing prevents a thing in different states from reaching its end by different ways: albeit there is never but one proper end of a thing. Hence, although the sight knows nothing without color; nevertheless in a certain state the intellect can know without phantasms, but not without intelligible species.
Reply to Objection 2: Although the soul of Christ was of the same nature as our souls, yet it had a state which our souls have not yet in fact, but only in hope, i.e. the state of comprehension.
Reply to Objection 3: Although the soul of Christ could understand without turning to phantasms, yet it could also understand by turning to phantasms. Hence the senses were not useless in it; especially as the senses are not afforded to man solely for intellectual knowledge, but for the need of animal life.
III · Q. 11, Art. 3: Whether this knowledge is collative?
Whether this knowledge is collative?
Objection 1: It would seem that the soul of Christ had not this knowledge by way of comparison. For Damascene says (De Fide Orth. iii, 14): "We do not uphold counsel or choice in Christ." Now these things are withheld from Christ only inasmuch as they imply comparison and discursion. Therefore it seems that there was no collative or discursive knowledge in Christ.
Objection 2: Further, man needs comparison and discursion of reason in order to find out the unknown. But the soul of Christ knew everything, as was said above (Q 10, A 2). Hence there was no discursive or collative knowledge in Him.
Objection 3: Further, the knowledge in Christ's soul was like that of comprehensors, who are likened to the angels, according to Mat. 22:30. Now there is no collative or discursive knowledge in the angels, as Dionysius shows (Div. Nom. vii). Therefore there was no discursive or collative knowledge in the soul of Christ.
On the contrary, Christ had a rational soul, as was shown (Q 5, A 4). Now the proper operation of a rational soul consists in comparison and discursion from one thing to another. Therefore there was collative and discursive knowledge in Christ.
I answer that, Knowledge may be discursive or collative in two ways. First, in the acquisition of the knowledge, as happens to us, who proceed from one thing to the knowledge of another, as from causes to effects, and conversely. And in this way the knowledge in Christ's soul was not discursive or collative, since this knowledge which we are now considering was divinely infused, and not acquired by a process of reasoning. Secondly, knowledge may be called discursive or collative in use; as at times those who know, reason from cause to effect, not in order to learn anew, but wishing to use the knowledge they have. And in this way the knowledge in Christ's soul could be collative or discursive; since it could conclude one thing from another, as it pleased, as in Mat. 17:24,25, when our Lord asked Peter: "Of whom do the kings of the earth receive tribute, of their own children, or of strangers?" On Peter replying: "Of strangers," He concluded: "Then the children are free."
Reply to Objection 1: From Christ is excluded that counsel which is with doubt; and consequently choice, which essentially includes such counsel; but the practice of using counsel is not excluded from Christ.
Reply to Objection 2: This reason rests upon discursion and comparison, as used to acquire knowledge.
Reply to Objection 3: The blessed are likened to the angels in the gifts of graces; yet there still remains the difference of natures. And hence to use comparison and discursion is connatural to the souls of the blessed, but not to angels.