11. A certain writer, when he would briefly intimate the special attributes of each of the persons in the Trinity, tells us that “Eternity is in the Father, form in the Image, use in the Gift.” And since he was a man of no mean authority in handling the Scriptures, and in the assertion of the faith, for it is Hilary who put this in his book (On the Trinity, ii.); I have searched into the hidden meaning of these words as far as I can, that is, of the Father, and the Image, and the Gift, of eternity, and of form, and of use. And I do not think that he intended more by the word eternity, than that the Father has not a father from whom He is; but the Son is from the Father, so as to be, and so as to be co-eternal with Him. For if an image perfectly fills the measure of that of which it is the image, then the image is made equal to that of which it is the image, not the latter to its own image. And in respect to this image he has named form, I believe on account of the quality of beauty, where there is at once such great fitness, and prime equality, and prime likeness, differing in nothing, and unequal in no respect, and in no part unlike, but answering exactly to Him whose image it is: where there is prime and absolute life, to whom it is not one thing to live, and another to be, but the same thing to be and to live; and prime and absolute intellect, to whom it is not one thing to live, another to understand, but to understand is to live, and is to be, and all things are one: as though a perfect Word (John i. 1), to which nothing is wanting, and a certain skill of the omnipotent and wise God, full of all living, unchangeable sciences, and all one in it, as itself is one from one, with whom it is one. Therein God knew all things which He made by it; and therefore, while times pass away and succeed, nothing passes away or succeeds to the knowledge of God. For things which are created are not therefore known by God, because they have been made; and not rather have been therefore made, even although changeable, because they are known unchangeably by Him. Therefore that unspeakable conjunction of the Father and His image is not without fruition, without love, without joy. Therefore that love, delight, felicity, or blessedness, if indeed it can be worthily expressed by any human word, is called by him, in short, Use; and is the Holy Spirit in the Trinity, not begotten, but the sweetness of the begetter and of the begotten, filling all creatures according to their capacity with abundant bountifulness and copiousness, that they may keep their proper order and rest satisfied in their proper place.
Complete source paragraph · On the Holy Trinity, Chapter 10.—Of the Attributes Assigned by Hilary to Each Person. The Trinity is Represented in Things that are Made.; original source section: Chapter 10, source paragraph 2 · Original source