Objection 2: Further, the greater the resistance is on the part of the thing made, so much the greater power is required in the maker. But a "contrary" resists more than "nothing." Therefore it requires more power to make (something) from its contrary, which nevertheless a creature can do, than to make a thing from nothing. Much more therefore can a creature do this.
Objection 3: Further, the power of the maker is considered according to the measure of what is made. But created being is finite, as we proved above when treating of the infinity of God (Q[7], AA[2],3,4). Therefore only a finite power is needed to produce a creature by creation. But to have a finite power is not contrary to the nature of a creature. Therefore it is not impossible for a creature to create.
On the contrary, Augustine says (De Trin. iii, 8) that neither good nor bad angels can create anything. Much less therefore can any other creatures.
I answer that, It sufficiently appears at the first glance, according to what precedes (A[1]), that to create can be the action of God alone. For the more universal effects must be reduced to the more universal and prior causes. Now among all effects the most universal is being itself: and hence it must be the proper effect of the first and most universal cause, and that is God. Hence also it is said (De Causis prop., iii) that "neither intelligence nor the soul gives us being, except inasmuch as it works by divine operation." Now to produce being absolutely, not as this or that being, belongs to creation. Hence it is manifest that creation is the proper act of God alone.
It happens, however, that something participates the proper action of another, not by its own power, but instrumentally, inasmuch as it acts by the power of another; as air can heat and ignite by the power of fire. And so some have supposed that although creation is the proper act of the universal cause, still some inferior cause acting by the power of the first cause, can create. And thus Avicenna asserted that the first separate substance created by God created another after itself, and the substance of the world and its soul; and that the substance of the world creates the matter of inferior bodies. And in the same manner the Master says (Sent. iv, D, 5) that God can communicate to a creature the power of creating, so that the latter can create ministerially, not by its own power.
But such a thing cannot be, because the secondary instrumental cause does not participate the action of the superior cause, except inasmuch as by something proper to itself it acts dispositively to the effect of the principal agent. If therefore it effects nothing, according to what is proper to itself, it is used to no purpose; nor would there be any need of certain instruments for certain actions. Thus we see that a saw, in cutting wood, which it does by the property of its own form, produces the form of a bench, which is the proper effect of the principal agent. Now the proper effect of God creating is what is presupposed to all other effects, and that is absolute being. Hence nothing else can act dispositively and instrumentally to this effect, since creation is not from anything presupposed, which can be disposed by the action of the instrumental agent. So therefore it is impossible for any creature to create, either by its own power or instrumentally---that is, ministerially.
And above all it is absurd to suppose that a body can create, for no body acts except by touching or moving; and thus it requires in its action some pre-existing thing, which can be touched or moved, which is contrary to the very idea of creation.
Reply to Objection 1: A perfect thing participating any nature, makes a likeness to itself, not by absolutely producing that nature, but by applying it to something else. For an individual man cannot be the cause of human nature absolutely, because he would then be the cause of himself; but he is the cause of human nature being in the man begotten; and thus he presupposes in his action a determinate matter whereby he is an individual man. But as an individual man participates human nature, so every created being participates, so to speak, the nature of being; for God alone is His own being, as we have said above (Q[7], AA[1],2). Therefore no created being can produce a being absolutely, except forasmuch as it causes "being" in "this": and so it is necessary to presuppose that whereby a thing is this thing, before the action whereby it makes its own likeness. But in an immaterial substance it is not possible to presuppose anything whereby it is this thing; because it is what it is by its form, whereby it has being, since it is a subsisting form. Therefore an immaterial substance cannot produce another immaterial substance like to itself as regards its being, but only as regards some added perfection; as we may say that a superior angel illuminates an inferior, as Dionysius says (Coel. Hier. iv, x). In this way even in heaven there is paternity, as the Apostle says ( Eph. 3:15 ): "From whom all paternity in heaven and on earth is named." From which evidently appears that no created being can cause anything, unless something is presupposed; which is against the very idea of creation.
Reply to Objection 2: A thing is made from its contrary indirectly (Phys. i, text 43), but directly from the subject which is in potentiality. And so the contrary resists the agent, inasmuch as it impedes the potentiality from the act which the agent intends to induce, as fire intends to reduce the matter of water to an act like to itself, but is impeded by the form and contrary dispositions, whereby the potentiality (of the water) is restrained from being reduced to act; and the more the potentiality is restrained, the more power is required in the agent to reduce the matter to act. Hence a much greater power is required in the agent when no potentiality pre-exists. Thus therefore it appears that it is an act of much greater power to make a thing from nothing, than from its contrary.
Reply to Objection 3: The power of the maker is reckoned not only from the substance of the thing made, but also from the mode of its being made; for a greater heat heats not only more, but quicker. Therefore although to create a finite effect does not show an infinite power, yet to create it from nothing does show an infinite power: which appears from what has been said (ad 2). For if a greater power is required in the agent in proportion to the distance of the potentiality from the act, it follows that the power of that which produces something from no presupposed potentiality is infinite, because there is no proportion between "no potentiality" and the potentiality presupposed by the power of a natural agent, as there is no proportion between "not being" and "being." And because no creature has simply an infinite power, any more than it has an infinite being, as was proved above (Q[7], A[2]), it follows that no creature can create.
Whether to create is proper to any person?
Objection 1: It would seem that to create is proper to some Person. For what comes first is the cause of what is after; and what is perfect is the cause of what is imperfect. But the procession of the divine Person is prior to the procession of the creature: and is more perfect, because the divine Person proceeds in perfect similitude of its principle; whereas the creature proceeds in imperfect similitude. Therefore the processions of the divine Persons are the cause of the processions of things, and so to create belongs to a Person.
Objection 2: Further, the divine Persons are distinguished from each other only by their processions and relations. Therefore whatever difference is attributed to the divine Persons belongs to them according to the processions and relations of the Persons. But the causation of creatures is diversely attributed to the divine Persons; for in the Creed, to the Father is attributed that "He is the Creator of all things visible and invisible"; to the Son is attributed that by Him "all things were made"; and to the Holy Ghost is attributed that He is "Lord and Life-giver." Therefore the causation of creatures belongs to the Persons according to processions and relations.
Objection 3: Further, if it be said that the causation of the creature flows from some essential attribute appropriated to some one Person, this does not appear to be sufficient; because every divine effect is caused by every essential attribute---viz. by power, goodness and wisdom---and thus does not belong to one more than to another. Therefore any determinate mode of causation ought not to be attributed to one Person more than to another, unless they are distinguished in creating according to relations and processions.
On the contrary, Dionysius says (Div. Nom. ii) that all things caused are the common work of the whole Godhead.
I answer that, To create is, properly speaking, to cause or produce the being of things. And as every agent produces its like, the principle of action can be considered from the effect of the action; for it must be fire that generates fire. And therefore to create belongs to God according to His being, that is, His essence, which is common to the three Persons. Hence to create is not proper to any one Person, but is common to the whole Trinity.
Nevertheless the divine Persons, according to the nature of their procession, have a causality respecting the creation of things. For as was said above (Q[14], A[8]; Q[19], A[4]), when treating of the knowledge and will of God, God is the cause of things by His intellect and will, just as the craftsman is cause of the things made by his craft. Now the craftsman works through the word conceived in his mind, and through the love of his will regarding some object. Hence also God the Father made the creature through His Word, which is His Son; and through His Love, which is the Holy Ghost. And so the processions of the Persons are the type of the productions of creatures inasmuch as they include the essential attributes, knowledge and will.
Reply to Objection 1: The processions of the divine Persons are the cause of creation, as above explained.
Reply to Objection 2: As the divine nature, although common to the three Persons, still belongs to them in a kind of order, inasmuch as the Son receives the divine nature from the Father, and the Holy Ghost from both: so also likewise the power of creation, whilst common to the three Persons, belongs to them in a kind of order. For the Son receives it from the Father, and the Holy Ghost from both. Hence to be the Creator is attributed to the Father as to Him Who does not receive the power of creation from another. And of the Son it is said ( Jn. 1:3 ), "Through Him all things were made," inasmuch as He has the same power, but from another; for this preposition "through" usually denotes a mediate cause, or "a principle from a principle." But to the Holy Ghost, Who has the same power from both, is attributed that by His sway He governs, and quickens what is created by the Father through the Son. Again, the reason for this particular appropriation may be taken from the common notion of the appropriation of the essential attributes. For, as above stated (Q[39], A[8], ad 3), to the Father is appropriated power which is chiefly shown in creation, and therefore it is attributed to Him to be the Creator. To the Son is appropriated wisdom, through which the intellectual agent acts; and therefore it is said: "Through Whom all things were made." And to the Holy Ghost is appropriated goodness, to which belong both government, which brings things to their proper end, and the giving of life---for life consists in a certain interior movement; and the first mover is the end, and goodness.
Reply to Objection 3: Although every effect of God proceeds from each attribute, each effect is reduced to that attribute with which it is naturally connected; thus the order of things is reduced to "wisdom," and the justification of the sinner to "mercy" and "goodness" poured out super-abundantly. But creation, which is the production of the very substance of a thing, is reduced to "power."
Whether in creatures is necessarily found a trace of the Trinity?
Objection 1: It would seem that in creatures there is not necessarily found a trace of the Trinity. For anything can be traced through its traces. But the trinity of persons cannot be traced from the creatures, as was above stated (Q[32], A[1]). Therefore there is no trace of the Trinity in creatures.
Objection 2: Further, whatever is in creatures is created. Therefore if the trace of the Trinity is found in creatures according to some of their properties, and if everything created has a trace of the Trinity, it follows that we can find a trace of the Trinity in each of these (properties): and so on to infinitude.
Objection 3: Further, the effect represents only its own cause. But the causality of creatures belongs to the common nature, and not to the relations whereby the Persons are distinguished and numbered. Therefore in the creature is to be found a trace not of the Trinity but of the unity of essence.
On the contrary, Augustine says (De Trin. vi, 10), that "the trace of the Trinity appears in creatures."