Summa Theologica, Part I (Prima Pars) From the Complete...

Hence the intellect which has more of the light of glory will see God the more perfectly; and he will have a fuller participation of the light of glory who has more charity; because where there is the greater charity, there is the more desire; and desire in a certain degree makes the one desiring apt and prepared to receive the object desired. Hence he who possesses the more charity, will see God the more perfectly, and will be the more beatified.

Reply Obj. 1: In the words, "We shall see Him as He is," the conjunction "as" determines the mode of vision on the part of the object seen, so that the meaning is, we shall see Him to be as He is, because we shall see His existence, which is His essence. But it does not determine the mode of vision on the part of the one seeing; as if the meaning was that the mode of seeing God will be as perfect as is the perfect mode of God's existence.

Thus appears the answer to the Second Objection. For when it is said that one intellect does not understand one and the same thing better than another, this would be true if referred to the mode of the thing understood, for whoever understands it otherwise than it really is, does not truly understand it, but not if referred to the mode of understanding, for the understanding of one is more perfect than the understanding of another.

Reply Obj. 3: The diversity of seeing will not arise on the part of the object seen, for the same object will be presented to all—viz. the essence of God; nor will it arise from the diverse participation of the object seen by different similitudes; but it will arise on the part of the diverse faculty of the intellect, not, indeed, the natural faculty, but the glorified faculty. _______________________

Objection 1: It seems that those who see the divine essence, comprehend God. For the Apostle says (Phil. 3:12): "But I follow after, if I may by any means comprehend [Douay: 'apprehend']." But the Apostle did not follow in vain; for he said (1 Cor. 9:26): "I . . . so run, not as at an uncertainty." Therefore he comprehended; and in the same way, others also, whom he invites to do the same, saying: "So run that you may comprehend."

Obj. 2: Further, Augustine says (De Vid. Deum, Ep. cxlvii): "That is comprehended which is so seen as a whole, that nothing of it is hidden from the seer." But if God is seen in His essence, He is seen whole, and nothing of Him is hidden from the seer, since God is simple. Therefore whoever sees His essence, comprehends Him.

Obj. 3: Further, if we say that He is seen as a "whole," but not "wholly," it may be contrarily urged that "wholly" refers either to the mode of the seer, or to the mode of the thing seen. But he who sees the essence of God, sees Him wholly, if the mode of the thing seen is considered; forasmuch as he sees Him as He is; also, likewise, he sees Him wholly if the mode of the seer is meant, forasmuch as the intellect will with its full power see the Divine essence. Therefore all who see the essence of God see Him wholly; therefore they comprehend Him.

In proof of this we must consider that what is comprehended is perfectly known; and that is perfectly known which is known so far as it can be known. Thus, if anything which is capable of scientific demonstration is held only by an opinion resting on a probably proof, it is not comprehended; as, for instance, if anyone knows by scientific demonstration that a triangle has three angles equal to two right angles, he comprehends that truth; whereas if anyone accepts it as a probable opinion because wise men or most men teach it, he cannot be said to comprehend the thing itself, because he does not attain to that perfect mode of knowledge of which it is intrinsically capable. But no created intellect can attain to that perfect mode of the knowledge of the Divine intellect whereof it is intrinsically capable. Which thus appears—Everything is knowable according to its actuality. But God, whose being is infinite, as was shown above (Q. 7), is infinitely knowable. Now no created intellect can know God infinitely. For the created intellect knows the Divine essence more or less perfectly in proportion as it receives a greater or lesser light of glory. Since therefore the created light of glory received into any created intellect cannot be infinite, it is clearly impossible for any created intellect to know God in an infinite degree. Hence it is impossible that it should comprehend God.

Reply Obj. 1: "Comprehension" is twofold: in one sense it is taken strictly and properly, according as something is included in the one comprehending; and thus in no way is God comprehended either by intellect, or in any other way; forasmuch as He is infinite and cannot be included in any finite being; so that no finite being can contain Him infinitely, in the degree of His own infinity. In this sense we now take comprehension. But in another sense "comprehension" is taken more largely as opposed to "non-attainment"; for he who attains to anyone is said to comprehend him when he attains to him. And in this sense God is comprehended by the blessed, according to the words, "I held him, and I will not let him go" (Cant. 3:4); in this sense also are to be understood the words quoted from the Apostle concerning comprehension. And in this way "comprehension" is one of the three prerogatives of the soul, responding to hope, as vision responds to faith, and fruition responds to charity. For even among ourselves not everything seen is held or possessed, forasmuch as things either appear sometimes afar off, or they are not in our power of attainment. Neither, again, do we always enjoy what we possess; either because we find no pleasure in them, or because such things are not the ultimate end of our desire, so as to satisfy and quell it. But the blessed possess these three things in God; because they see Him, and in seeing Him, possess Him as present, having the power to see Him always; and possessing Him, they enjoy Him as the ultimate fulfilment of desire.

Reply Obj. 2: God is called incomprehensible not because anything of Him is not seen; but because He is not seen as perfectly as He is capable of being seen; thus when any demonstrable proposition is known by probable reason only, it does not follow that any part of it is unknown, either the subject, or the predicate, or the composition; but that it is not as perfectly known as it is capable of being known. Hence Augustine, in his definition of comprehension, says the whole is comprehended when it is seen in such a way that nothing of it is hidden from the seer, or when its boundaries can be completely viewed or traced; for the boundaries of a thing are said to be completely surveyed when the end of the knowledge of it is attained.

Reply Obj. 3: The word "wholly" denotes a mode of the object; not that the whole object does not come under knowledge, but that the mode of the object is not the mode of the one who knows. Therefore he who sees God's essence, sees in Him that He exists infinitely, and is infinitely knowable; nevertheless, this infinite mode does not extend to enable the knower to know infinitely; thus, for instance, a person can have a probable opinion that a proposition is demonstrable, although he himself does not know it as demonstrated. _______________________

Obj. 2: Further, whoever sees a mirror, sees what is reflected in the mirror. But all actual or possible things shine forth in God as in a mirror; for He knows all things in Himself. Therefore whoever sees God, sees all actual things in Him, and also all possible things.

Obj. 3: Further, whoever understands the greater, can understand the least, as is said in De Anima iii. But all that God does, or can do, are less than His essence. Therefore whoever understands God, can understand all that God does, or can do.

Obj. 4: Further, the rational creature naturally desires to know all things. Therefore if in seeing God it does not know all things, its natural desire will not rest satisfied; thus, in seeing God it will not be fully happy; which is incongruous. Therefore he who sees God knows all things.

On the contrary, The angels see the essence of God; and yet do not know all things. For as Dionysius says (Coel. Hier. vii), "the inferior angels are cleansed from ignorance by the superior angels." Also they are ignorant of future contingent things, and of secret thoughts; for this knowledge belongs to God alone. Therefore whosoever sees the essence of God, does not know all things.

I answer that, The created intellect, in seeing the divine essence, does not see in it all that God does or can do. For it is manifest that things are seen in God as they are in Him. But all other things are in God as effects are in the power of their cause. Therefore all things are seen in God as an effect is seen in its cause. Now it is clear that the more perfectly a cause is seen, the more of its effects can be seen in it. For whoever has a lofty understanding, as soon as one demonstrative principle is put before him can gather the knowledge of many conclusions; but this is beyond one of a weaker intellect, for he needs things to be explained to him separately. And so an intellect can know all the effects of a cause and the reasons for those effects in the cause itself, if it comprehends the cause wholly. Now no created intellect can comprehend God wholly, as shown above (A. 7). Therefore no created intellect in seeing God can know all that God does or can do, for this would be to comprehend His power; but of what God does or can do any intellect can know the more, the more perfectly it sees God.

Reply Obj. 1: Gregory speaks as regards the object being sufficient, namely, God, who in Himself sufficiently contains and shows forth all things; but it does not follow that whoever sees God knows all things, for he does not perfectly comprehend Him.

Reply Obj. 3: Although it is more to see God than to see all things else, still it is a greater thing to see Him so that all things are known in Him, than to see Him in such a way that not all things, but the fewer or the more, are known in Him. For it has been shown in this article that the more things are known in God according as He is seen more or less perfectly.

Reply Obj. 4: The natural desire of the rational creature is to know everything that belongs to the perfection of the intellect, namely, the species and the genera of things and their types, and these everyone who sees the Divine essence will see in God. But to know other singulars, their thoughts and their deeds does not belong to the perfection of the created intellect nor does its natural desire go out to these things; neither, again, does it desire to know things that exist not as yet, but which God can call into being. Yet if God alone were seen, Who is the fount and principle of all being and of all truth, He would so fill the natural desire of knowledge that nothing else would be desired, and the seer would be completely beatified. Hence Augustine says (Confess. v): "Unhappy the man who knoweth all these" (i.e. all creatures) "and knoweth not Thee! but happy whoso knoweth Thee although he know not these. And whoso knoweth both Thee and them is not the happier for them, but for Thee alone." _______________________

Objection 1: It seems that what is seen in God by those who see the Divine essence, is seen by means of some similitude. For every kind of knowledge comes about by the knower being assimilated to the object known. For thus the intellect in act becomes the actual intelligible, and the sense in act becomes the actual sensible, inasmuch as it is informed by a similitude of the object, as the eye by the similitude of color. Therefore if the intellect of one who sees the Divine essence understands any creatures in God, it must be informed by their similitudes.

Obj. 2: Further, what we have seen, we keep in memory. But Paul, seeing the essence of God whilst in ecstasy, when he had ceased to see the Divine essence, as Augustine says (Gen. ad lit. ii, 28,34), remembered many of the things he had seen in the rapture; hence he said: "I have heard secret words which it is not granted to man to utter" (2 Cor. 12:4). Therefore it must be said that certain similitudes of what he remembered, remained in his mind; and in the same way, when he actually saw the essence of God, he had certain similitudes or ideas of what he actually saw in it.

On the contrary, A mirror and what is in it are seen by means of one likeness. But all things are seen in God as in an intelligible mirror. Therefore if God Himself is not seen by any similitude but by His own essence, neither are the things seen in Him seen by any similitudes or ideas.

I answer that, Those who see the divine essence see what they see in God not by any likeness, but by the divine essence itself united to their intellect. For each thing is known in so far as its likeness is in the one who knows. Now this takes place in two ways. For as things which are like one and the same thing are like to each other, the cognitive faculty can be assimilated to any knowable object in two ways. In one way it is assimilated by the object itself, when it is directly informed by a similitude, and then the object is known in itself. In another way when informed by a similitude which resembles the object; and in this way, the knowledge is not of the thing in itself, but of the thing in its likeness. For the knowledge of a man in himself differs from the knowledge of him in his image. Hence to know things thus by their likeness in the one who knows, is to know them in themselves or in their own nature; whereas to know them by their similitudes pre-existing in God, is to see them in God. Now there is a difference between these two kinds of knowledge. Hence, according to the knowledge whereby things are known by those who see the essence of God, they are seen in God Himself not by any other similitudes but by the Divine essence alone present to the intellect; by which also God Himself is seen.

Reply Obj. 2: Some of the cognitive faculties form other images from those first conceived; thus the imagination from the preconceived images of a mountain and of gold can form the likeness of a golden mountain; and the intellect, from the preconceived ideas of genus and difference, forms the idea of species; in like manner from the similitude of an image we can form in our minds the similitude of the original of the image. Thus Paul, or any other person who sees God, by the very vision of the divine essence, can form in himself the similitudes of what is seen in the divine essence, which remained in Paul even when he had ceased to see the essence of God. Still this kind of vision whereby things are seen by this likeness thus conceived, is not the same as that whereby things are seen in God. _______________________

Objection 1: It seems that those who see the essence of God do not see all they see in Him at one and the same time. For according to the Philosopher (Topic. ii): "It may happen that many things are known, but only one is understood." But what is seen in God, is understood; for God is seen by the intellect. Therefore those who see God do not see all in Him at the same time.

Obj. 2: Further, Augustine says (Gen. ad lit. viii, 22, 23), "God moves the spiritual creature according to time"—i.e. by intelligence and affection. But the spiritual creature is the angel who sees God. Therefore those who see God understand and are affected successively; for time means succession.