Thomas Aquinas - Summa Theologica, Part I (Prima Pars)

Reply Obj. 1: This mode of knowing God is natural to an angel—namely, to know Him by His own likeness refulgent in the angel himself. But to know God by any created similitude is not to know the essence of God, as was shown above (A. 2). Hence it does not follow that an angel can know the essence of God by his own power.

Reply Obj. 2: The angelic intellect is not defective, if defect be taken to mean privation, as if it were without anything which it ought to have. But if the defect be taken negatively, in that sense every creature is defective, when compared with God; forasmuch as it does not possess the excellence which is in God.

Reply Obj. 3: The sense of sight, as being altogether material, cannot be raised up to immateriality. But our intellect, or the angelic intellect, inasmuch as it is elevated above matter in its own nature, can be raised up above its own nature to a higher level by grace. The proof is, that sight cannot in any way know abstractedly what it knows concretely; for in no way can it perceive a nature except as this one particular nature; whereas our intellect is able to consider abstractedly what it knows concretely. Now although it knows things which have a form residing in matter, still it resolves the composite into both of these elements; and it considers the form separately by itself. Likewise, also, the intellect of an angel, although it naturally knows the concrete in any nature, still it is able to separate that existence by its intellect; since it knows that the thing itself is one thing, and its existence is another. Since therefore the created intellect is naturally capable of apprehending the concrete form, and the concrete being abstractedly, by way of a kind of resolution of parts; it can by grace be raised up to know separate subsisting substance, and separate subsisting existence. _______________________

FIFTH ARTICLE [I, Q. 12, Art. 5]

Whether the Created Intellect Needs Any Created Light in Order to See the

Essence of God?

Objection 1: It seems that the created intellect does not need any created light in order to see the essence of God. For what is of itself lucid in sensible things does not require any other light in order to be seen. Therefore the same applies to intelligible things. Now God is intelligible light. Therefore He is not seen by means of any created light.

Obj. 2: Further, if God is seen through a medium, He is not seen in His essence. But if seen by any created light, He is seen through a medium. Therefore He is not seen in His essence.

Obj. 3: Further, what is created can be natural to some creature. Therefore if the essence of God is seen through any created light, such a light can be made natural to some other creature; and thus, that creature would not need any other light to see God; which is impossible. Therefore it is not necessary that every creature should require a superadded light in order to see the essence of God.

On the contrary, It is written: "In Thy light we shall see light" (Ps. 35:10).

I answer that, Everything which is raised up to what exceeds its nature, must be prepared by some disposition above its nature; as, for example, if air is to receive the form of fire, it must be prepared by some disposition for such a form. But when any created intellect sees the essence of God, the essence of God itself becomes the intelligible form of the intellect. Hence it is necessary that some supernatural disposition should be added to the intellect in order that it may be raised up to such a great and sublime height. Now since the natural power of the created intellect does not avail to enable it to see the essence of God, as was shown in the preceding article, it is necessary that the power of understanding should be added by divine grace. Now this increase of the intellectual powers is called the illumination of the intellect, as we also call the intelligible object itself by the name of light of illumination. And this is the light spoken of in the Apocalypse (Apoc. 21:23): "The glory of God hath enlightened it"—viz. the society of the blessed who see God. By this light the blessed are made "deiform"—i.e. like to God, according to the saying: "When He shall appear we shall be like to Him, and [Vulg.: 'because'] we shall see Him as He is" (1 John 2:2).

Reply Obj. 1: The created light is necessary to see the essence of God, not in order to make the essence of God intelligible, which is of itself intelligible, but in order to enable the intellect to understand in the same way as a habit makes a power abler to act. Even so corporeal light is necessary as regards external sight, inasmuch as it makes the medium actually transparent, and susceptible of color.

Reply Obj. 2: This light is required to see the divine essence, not as a similitude in which God is seen, but as a perfection of the intellect, strengthening it to see God. Therefore it may be said that this light is to be described not as a medium in which God is seen, but as one by which He is seen; and such a medium does not take away the immediate vision of God.

Reply Obj. 3: The disposition to the form of fire can be natural only to the subject of that form. Hence the light of glory cannot be natural to a creature unless the creature has a divine nature; which is impossible. But by this light the rational creature is made deiform, as is said in this article. _______________________

SIXTH ARTICLE [I. Q. 12, Art. 6]

Whether of Those Who See the Essence of God, One Sees More Perfectly Than

Another?

Objection 1: It seems that of those who see the essence of God, one does not see more perfectly than another. For it is written (1 John 3:2): "We shall see Him as He is." But He is only in one way. Therefore He will be seen by all in one way only; and therefore He will not be seen more perfectly by one and less perfectly by another.

Obj. 2: Further, Augustine says (Octog. Tri. Quaest. qu. xxxii): "One person cannot see one and the same thing more perfectly than another." But all who see the essence of God, understand the Divine essence, for God is seen by the intellect and not by sense, as was shown above (A. 3). Therefore of those who see the divine essence, one does not see more clearly than another.

Obj. 3: Further, That anything be seen more perfectly than another can happen in two ways: either on the part of the visible object, or on the part of the visual power of the seer. On the part of the object, it may so happen because the object is received more perfectly in the seer, that is, according to the greater perfection of the similitude; but this does not apply to the present question, for God is present to the intellect seeing Him not by way of similitude, but by His essence. It follows then that if one sees Him more perfectly than another, this happens according to the difference of the intellectual power; thus it follows too that the one whose intellectual power is higher, will see Him the more clearly; and this is incongruous; since equality with angels is promised to men as their beatitude.

On the contrary, Eternal life consists in the vision of God, according to John 17:3: "This is eternal life, that they may know Thee the only true God," etc. Therefore if all saw the essence of God equally in eternal life, all would be equal; the contrary to which is declared by the Apostle: "Star differs from star in glory" (1 Cor. 15:41).

I answer that, Of those who see the essence of God, one sees Him more perfectly than another. This, indeed, does not take place as if one had a more perfect similitude of God than another, since that vision will not spring from any similitude; but it will take place because one intellect will have a greater power or faculty to see God than another. The faculty of seeing God, however, does not belong to the created intellect naturally, but is given to it by the light of glory, which establishes the intellect in a kind of "deiformity," as appears from what is said above, in the preceding article.