OF GOD'S KNOWLEDGE (SIXTEEN ARTICLES)
Having considered what belongs to the divine substance, we have now to treat of God's operation. And since one kind of operation is immanent, and another kind of operation proceeds to the exterior effect, we treat first of knowledge and of will (for understanding abides in the intelligent agent, and will is in the one who wills); and afterwards of the power of God, the principle of the divine operation as proceeding to the exterior effect. Now because to understand is a kind of life, after treating of the divine knowledge, we consider truth and falsehood. Further, as everything known is in the knower, and the types of things as existing in the knowledge of God are called ideas, to the consideration of knowledge will be added the treatment of ideas.
Concerning knowledge, there are sixteen points for inquiry:
(1) Whether there is knowledge in God?
(2) Whether God understands Himself?
(3) Whether He comprehends Himself?
(4) Whether His understanding is His substance?
(5) Whether He understands other things besides Himself?
(6) Whether He has a proper knowledge of them?
(7) Whether the knowledge of God is discursive?
(8) Whether the knowledge of God is the cause of things?
(9) Whether God has knowledge of non-existing things?
(10) Whether He has knowledge of evil?
(11) Whether He has knowledge of individual things?
(12) Whether He knows the infinite?
(13) Whether He knows future contingent things?
(14) Whether He knows enunciable things?
(15) Whether the knowledge of God is variable?
(16) Whether God has speculative or practical knowledge of things?
Whether there is knowledge [*Scientia]?
Objection 1: It seems that in God there is not knowledge. For knowledge is a habit; and habit does not belong to God, since it is the mean between potentiality and act. Therefore knowledge is not in God.
Objection 2: Further, since science is about conclusions, it is a kind of knowledge caused by something else which is the knowledge of principles. But nothing is caused in God; therefore science is not in God.
Objection 3: Further, all knowledge is universal, or particular. But in God there is no universal or particular (Q[3], A[5]). Therefore in God there is not knowledge.
On the contrary, The Apostle says, "O the depth of the riches of the wisdom and of the knowledge of God" ( Rom. 11:33 ).
I answer that, In God there exists the most perfect knowledge. To prove this, we must note that intelligent beings are distinguished from non-intelligent beings in that the latter possess only their own form; whereas the intelligent being is naturally adapted to have also the form of some other thing; for the idea of the thing known is in the knower. Hence it is manifest that the nature of a non-intelligent being is more contracted and limited; whereas the nature of intelligent beings has a greater amplitude and extension; therefore the Philosopher says (De Anima iii) that "the soul is in a sense all things." Now the contraction of the form comes from the matter. Hence, as we have said above (Q[7], A[1]) forms according as they are the more immaterial, approach more nearly to a kind of infinity. Therefore it is clear that the immateriality of a thing is the reason why it is cognitive; and according to the mode of immateriality is the mode of knowledge. Hence it is said in De Anima ii that plants do not know, because they are wholly material. But sense is cognitive because it can receive images free from matter, and the intellect is still further cognitive, because it is more separated from matter and unmixed, as said in De Anima iii. Since therefore God is in the highest degree of immateriality as stated above (Q[7], A[1]), it follows that He occupies the highest place in knowledge.