Whether it is proper to the Father to be unbegotten?

Objections

Objection 1 : It would seem that it is not proper to the Father to be unbegotten. For every property supposes something in that of which it is the property. But "unbegotten" supposes nothing in the Father; it only removes something. Therefore it does not signify a property of the Father.
Objection 2 : Further, Unbegotten is taken either in a privative, or in a negative sense. If in a negative sense, then whatever is not begotten can be called unbegotten. But the Holy Ghost is not begotten; neither is the divine essence. Therefore to be unbegotten belongs also to the essence; thus it is not proper to the Father. But if it be taken in a privative sense, as every privation signifies imperfection in the thing which is the subject of privation, it follows that the Person of the Father is imperfect; which cannot be.
Objection 3 : Further, in God, "unbegotten" does not signify relation, for it is not used relatively. Therefore it signifies substance; therefore unbegotten and begotten differ in substance. But the Son, Who is begotten, does not differ from the Father in substance. Therefore the Father ought not to be called unbegotten.
Objection 4 : Further, property means what belongs to one alone. Since, then, there are more than one in God proceeding from another, there is nothing to prevent several not receiving their being from another. Therefore the Father is not alone unbegotten.
Objection 5 : Further, as the Father is the principle of the person begotten, so is He of the person proceeding. So if by reason of his opposition to the person begotten, it is proper to the Father to be unbegotten it follows that it is proper to Him also to be unproceeding.