2 In adopting an unexpected attitude of hatred against me my opponents seem to be repeating the old story in Æsop. He makes the wolf bring certain charges against the lamb, as being really ashamed to seem to kill a creature who had done him no harm without some reasonable pretext; then when the lamb easily rebuts the slander, the wolf, none the less, continues his attack, and, though defeated in equity, comes off winner in biting. Just so with those who seem to count hatred to me as a virtue.
They will perhaps blush to hate me without a cause, and so invent pleas and charges against me, without abiding by any of their allegations, but urging as the ground of their detestation now this, now that, and now something else. In no single case is their malice consistent; but when they are baulked in one charge they cling to another and, foiled in this, have recourse to a third; and if all their accusations are scattered they do not drop their ill-will. They say that I preach three Gods, dinning the charge into the ears of the mob and pressing the calumny plausibly and persistently.
Nevertheless, truth is fighting on my side; and both in public to all the world, and in private to all whom I meet, I prove that I anathematize every one who maintains three Gods and do not even allow him to be a Christian. No sooner do they hear this than Sabellius is handy for them to urge against me, and it is noised abroad that my teaching is tainted with his error. Once more I hold out in my defence my wonted weapon of truth, and demonstrate that I shudder at Sabellianism as much as at Judaism.
Source: Letters (New Advent)