TWELFTH ARTICLE [I, Q. 13, Art. 12]

Whether Affirmative Propositions Can Be Formed About God?

Objection 1: It seems that affirmative propositions cannot be formed

about God. For Dionysius says (Coel. Hier. ii) that "negations about

God are true; but affirmations are vague."

Obj. 2: Further, Boethius says (De Trin. ii) that "a simple form

cannot be a subject." But God is the most absolutely simple form, as

shown (Q. 3): therefore He cannot be a subject. But everything about

which an affirmative proposition is made is taken as a subject.

Therefore an affirmative proposition cannot be formed about God.

Obj. 3: Further, every intellect is false which understands a

thing otherwise than as it is. But God has existence without any

composition as shown above (Q. 3, A. 7). Therefore since every

affirmative intellect understands something as compound, it follows

that a true affirmative proposition about God cannot be made.

_On the contrary,_ What is of faith cannot be false. But some

affirmative propositions are of faith; as that God is Three and One;

and that He is omnipotent. Therefore true affirmative propositions can

be formed about God.

_I answer that,_ True affirmative propositions can be formed about God.

To prove this we must know that in every true affirmative proposition

the predicate and the subject signify in some way the same thing in

reality, and different things in idea. And this appears to be the case

both in propositions which have an accidental predicate, and in those

which have an essential predicate. For it is manifest that "man" and

"white" are the same in subject, and different in idea; for the idea

of man is one thing, and that of whiteness is another. The same

applies when I say, "man is an animal"; since the same thing which is

man is truly animal; for in the same _suppositum_ there is sensible

nature by reason of which he is called animal, and the rational nature

by reason of which he is called man; hence here again predicate and

subject are the same as to _suppositum,_ but different as to idea. But

in propositions where one same thing is predicated of itself, the same

rule in some way applies, inasmuch as the intellect draws to the

_suppositum_ what it places in the subject; and what it places in the

predicate it draws to the nature of the form existing in the

_suppositum_; according to the saying that "predicates are to be taken

formally, and subjects materially." To this diversity in idea

corresponds the plurality of predicate and subject, while the

intellect signifies the identity of the thing by the composition

itself.

God, however, as considered in Himself, is altogether one and simple,

yet our intellect knows Him by different conceptions because it cannot

see Him as He is in Himself. Nevertheless, although it understands Him

under different conceptions, it knows that one and the same simple

object corresponds to its conceptions. Therefore the plurality of

predicate and subject represents the plurality of idea; and the

intellect represents the unity by composition.

Reply Obj. 1: Dionysius says that the affirmations about God

are vague or, according to another translation, "incongruous,"

inasmuch as no name can be applied to God according to its mode of

signification.

Reply Obj. 2: Our intellect cannot comprehend simple subsisting

forms, as they really are in themselves; but it apprehends them as

compound things in which there is something taken as subject and

something that is inherent. Therefore it apprehends the simple form

as a subject, and attributes something else to it.

Reply Obj. 3: This proposition, "The intellect understanding anything

otherwise than it is, is false," can be taken in two senses,

accordingly as this adverb "otherwise" determines the word

"understanding" on the part of the thing understood, or on the part

of the one who understands. Taken as referring to the thing

understood, the proposition is true, and the meaning is: Any

intellect which understands that the thing is otherwise than it is,

is false. But this does not hold in the present case; because our

intellect, when forming a proposition about God, does not affirm that

He is composite, but that He is simple. But taken as referring to the

one who understands, the proposition is false. For the mode of the

intellect in understanding is different from the mode of the thing in

its essence. Since it is clear that our intellect understands

material things below itself in an immaterial manner; not that it

understands them to be immaterial things; but its manner of

understanding is immaterial. Likewise, when it understands simple

things above itself, it understands them according to its own mode,

which is in a composite manner; yet not so as to understand them to

be composite things. And thus our intellect is not false in forming

composition in its ideas concerning God.

_______________________

Summa Theologica, Part I (Prima Pars) From the Complete American Edition · 第 110 / 722 题