SUMMA THEOLOGICA. Thomas Aquinas
of God and creatures univocally.
Objection 3: Further, measure is homogeneous with the thing measured. But God is the first measure of all beings. Therefore God is homogeneous with creatures; and thus a word may be applied univocally to God and to creatures.
On the contrary, whatever is predicated of various things under the same name but not in the same sense, is predicated equivocally. But no name belongs to God in the same sense that it belongs to creatures; for instance, wisdom in creatures is a quality, but not in God. Now a different genus changes an essence, since the genus is part of the definition; and the same applies to other things. Therefore whatever is said of God and of creatures is predicated equivocally.
Further, God is more distant from creatures than any creatures are from each other. But the distance of some creatures makes any univocal predication of them impossible, as in the case of those things which are not in the same genus. Therefore much less can anything be predicated univocally of God and creatures; and so only equivocal predication can be applied to them.
I answer that, Univocal predication is impossible between God and creatures. The reason of this is that every effect which is not an adequate result of the power of the efficient cause, receives the similitude of the agent not in its full degree, but in a measure that falls short, so that what is divided and multiplied in the effects resides in the agent simply, and in the same manner; as for example the sun by exercise of its one power produces manifold and various forms in all inferior things. In the same way, as said in the preceding article, all perfections existing in creatures divided and multiplied, pre-exist in God unitedly. Thus when any term expressing perfection is applied to a creature, it signifies that perfection distinct in idea from other perfections; as, for instance, by the term "wise" applied to man, we signify some perfection distinct from a man's essence, and distinct from his power and existence, and from all similar things; whereas when we apply to it God, we do not mean to signify anything distinct from His essence, or power, or existence. Thus also this term "wise" applied to man in some degree circumscribes and comprehends the thing signified; whereas this is not the case when it is applied to God; but it leaves the thing signified as incomprehended, and as exceeding the signification of the name. Hence it is evident that this term "wise" is not applied in the same way to God and to man. The same rule applies to other terms. Hence no name is predicated univocally of God and of creatures.
Neither, on the other hand, are names applied to God and creatures in a purely equivocal sense, as some have said. Because if that were so, it follows that from creatures nothing could be known or demonstrated about God at all; for the reasoning would always be exposed to the fallacy of equivocation. Such a view is against the philosophers, who proved many things about God, and also against what the Apostle says: "The invisible things of God are clearly seen being understood by the things that are made" (Rm. 1:20). Therefore it must be said that these names are said of God and creatures in an analogous sense, i.e. according to proportion.
Now names are thus used in two ways: either according as many things are proportionate to one, thus for example "healthy" predicated of medicine and urine in relation and in proportion to health of a body, of which the former is the sign and the latter the cause: or according as one thing is proportionate to another, thus "healthy" is said of medicine and animal, since medicine is the cause of health in the animal body. And in this way some things are said of God and creatures analogically, and not in a purely equivocal nor in a purely univocal sense. For we can name God only from creatures ( Article [1]). Thus whatever is said of God and creatures, is said according to the relation of a creature to God as its principle and cause, wherein all perfections of things pre-exist excellently. Now this mode of community of idea is a mean between pure equivocation and simple univocation. For in analogies the idea is not, as it is in univocals, one and the same, yet it is not totally diverse as in equivocals; but a term which is thus used in a multiple sense signifies various proportions to some one thing; thus "healthy" applied to urine signifies the sign of animal health, and applied to medicine signifies the cause of the same health.
Reply to Objection 1: Although equivocal predications must be reduced to univocal, still in actions, the non-univocal agent must precede the univocal agent. For the non-univocal agent is the universal cause of the whole species, as for instance the sun is the cause of the generation of all men; whereas the univocal agent is not the universal efficient cause of the whole species (otherwise it would be the cause of itself, since it is contained in the species), but is a particular cause of this individual which it places under the species by way of participation. Therefore the universal cause of the whole species is not an univocal agent; and the universal cause comes before the particular cause. But this universal agent, whilst it is not univocal, nevertheless is not altogether equivocal, otherwise it could not produce its own likeness, but rather it is to be called an analogical agent, as all univocal predications are reduced to one first non-univocal analogical predication, which is being.
Reply to Objection 2: The likeness of the creature to God is imperfect, for it does not represent one and the same generic thing ( Question [4], Article [3]).
Reply to Objection 3: God is not the measure proportioned to things measured; hence it is not necessary that God and creatures should be in the same genus.
The arguments adduced in the contrary sense prove indeed that these names are not predicated univocally of God and creatures; yet they do not prove that they are predicated equivocally.
Whether names predicated of God are predicated primarily of creatures?
Objection 1: It seems that names are predicated primarily of creatures rather than of God. For we name anything accordingly as we know it, since "names", as the Philosopher says, "are signs of ideas." But we know creatures before we know God. Therefore the names imposed by us are predicated primarily of creatures rather than of God.
Objection 2: Further, Dionysius says (Div. Nom. i): "We name God from creatures." But names transferred from creatures to God, are said primarily of creatures rather than of God, as "lion," "stone," and the like. Therefore all names applied to God and creatures are applied primarily to creatures rather than to God.
Objection 3: Further, all names equally applied to God and creatures, are applied to God as the cause of all creatures, as Dionysius says (De Mystica Theol.). But what is applied to anything through its cause, is applied to it secondarily, for "healthy" is primarily predicated of animal rather than of medicine, which is the cause of health. Therefore these names are said primarily of creatures rather than of God.
On the contrary, It is written, "I bow my knees to the Father, of our Lord Jesus Christ, of Whom all paternity in heaven and earth is named" (Eph. 3:14,15); and the same applies to the other names applied to God and creatures. Therefore these names are applied primarily to God rather than to creatures.
I answer that, In names predicated of many in an analogical sense, all are predicated because they have reference to some one thing; and this one thing must be placed in the definition of them all. And since that expressed by the name is the definition, as the Philosopher says (Metaph. iv), such a name must be applied primarily to that which is put in the definition of such other things, and secondarily to these others according as they approach more or less to that first. Thus, for instance, "healthy" applied to animals comes into the definition of "healthy" applied to medicine, which is called healthy as being the cause of health in the animal; and also into the definition of "healthy" which is applied to urine, which is called healthy in so far as it is the sign of the animal's health. Thus all names applied metaphorically to God, are applied to creatures primarily rather than to God, because when said of God they mean only similitudes to such creatures. For as "smiling" applied to a field means only that the field in the beauty of its flowering is like the beauty of the human