De Sententia Dionysii

¹⁶ Contrast of the language of Dionysius with that of Arius.

Now if the sense of the above statements were doubtful, there would be need of an interpreter. But since he wrote plainly and repeatedly on the same subject, let Arius gnash his teeth when he sees his own heresy subverted by Dionysius, and hears him say what he does not wish to hear: 'God was always Father, and the Son is not absolutely eternal, but His eternity flows from the eternity of the Father, and He coexists with Him as brightness with the light.' But let these, who have so much as imagined that Dionysius held with Arius, lay aside such a slander against him. For what have they in common, when Arius says, 'The Son was not before He was begotten, but there was once a time when He was not,' whereas Dionysius teaches, 'Now God is Light eternal, neither beginning, nor ever to end: accordingly the brightness lies before Him eternally, and coexists with Him, shining before Him without beginning and ever-begotten.' For in fact to meet the suspicion of others who allege that Dionysius in speaking of the Father does not name the Son, and again in speaking of the Son does not name the Father, but divides, removes, and separates the Son from the Father, he replies and puts them to shame in the second book, as follows.