30 While we were thus engaged, there suddenly arose a cloud full of hail, with destructive roar, overwhelming every Church upon which it burst and seized: an Emperor, most fond of gold and most hostile to Christ, infected with these two most serious diseases, insatiate avarice and blasphemy; a persecutor in succession to the persecutor, and, in succession to the apostate, not indeed an apostate, though no better to Christians, or rather, to the more devout and pure party of Christians, who worship the Trinity, which I call the only true devotion and saving doctrine.
For we do not measure out the Godhead into portions, nor banish from Itself by unnatural estrangements the one and unapproachable Nature; nor cure one evil by another, destroying the godless confusion of Sabellius by a more impious severance and division; which was the error of Arius, whose name declares his madness, the disturber and destroyer of a great part of the Church. For he did not honour the Father, by dishonouring His offspring with his unequal degrees of Godhead. But we recognize one glory of the Father, the equality of the Only-begotten; and one glory of the Son, that of the Spirit.
And we hold that, to subordinate any of the Three, is to destroy the whole. For we worship and acknowledge Them as Three in their properties, but One in their Godhead. He however had no such idea, being unable to look up, but being debased by those who led him, he dared to debase along with himself even the Nature of the Godhead, and became a wicked creature reducing Majesty to bondage, and aligning with creation the uncreated and timeless Nature.
Source: Orations (New Advent)