The Works of Dionysius the Areopagite, tr. by John Parker, , at sacred-texts.com
LETTER II. To the same Gaius Therapeutes.
How is He, Who is beyond all 63 , both above source of Divinity and above source of Good? Provided you p. 142 understand Deity and Goodness, as the very Actuality of the Good-making and God-making gift, and the inimitable imitation of the super-divine and super-good (gift), by aid of which we are deified and made good. For, moreover, if this becomes source of the deification and making good of those who are being deified and made good, He,--Who is super-source of every source, even of the so-called Deity and Goodness, seeing He is beyond source of Divinity and source of Goodness, in so far as He is inimitable, and not to be retained--excels the imitations and retentions, and the things which are imitated and those participating.
p140:63 C. II. § 6.