To Epictetus.
To my Lord, beloved brother, and most-longed-for fellow-minister Epictetus, Athanasius greeting in the Lord. I thought that all vain talk of all heretics, many as they may be, had been stopped by the Synod which was held at Nicæa. For the Faith there confessed by the Fathers according to the divine Scriptures is enough by itself at once to overthrow all impiety, and to establish the religious belief in Christ. For this reason at the present time, at the assembling of diverse synods, both in Gaul and Spain, and great Rome, all who came together, as though moved by one spirit, unanimously anathematised those who still were secretly holding with Arius, namely Auxentius of Milan, Ursacius, Valens, and Gaius of Pannonia. And they wrote everywhere, that, whereas the above-said were devising the names of synods to cite on their side, no synod should be cited in the Catholic Church save only that which was held at Nicæa, which was a monument of victory over all heresy, but especially the Arian, which was the main reason of the synod assembling when it did. How then, after all this, are some attempting to raise doubts or questions? If they belong to the Arians, this is not to be wondered at, that they find fault with what was drawn up against themselves, just as the Gentiles when they hear that 'the idols of the heathen are silver and gold, the work of men's hands,' think the doctrine of the divine Cross folly. But if those who desire to reopen everything by raising questions belong to those who think they believe aright, and love what the fathers have declared, they are simply doing what the prophet describes, giving their neighbour turbid confusion to drink, and fighting about words to no good purpose, save to the subversion of the simple.
Source: Letters (New Advent)