Whether it belongs to God alone to create?

Objections

Objection 1 : It would seem that it does not belong to God alone to create, because, according to the Philosopher (De Anima ii, text 34), what is perfect can make its own likeness. But immaterial creatures are more perfect than material creatures, which nevertheless can make their own likeness, for fire generates fire, and man begets man. Therefore an immaterial substance can make a substance like to itself. But immaterial substance can be made only by creation, since it has no matter from which to be made. Therefore a creature can create.
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 (Question [7], Articles [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.