19 Now that I have cleared the rocks and shoals I must spread sail and make all speed to reach his epilogue. Feeling himself to be a smatterer, he there produces Tertullian as a witness and quotes the words of Victorinus bishop of Petavium. Of Tertullian I say no more than that he did not belong to the Church. But as regards Victorinus, I assert what has already been proved from the Gospel— that he spoke of the brethren of the Lord not as being sons of Mary, but brethren in the sense I have explained, that is to say, brethren in point of kinship not by nature. We are, however, spending our strength on trifles, and, leaving the fountain of truth, are following the tiny streams of opinion. Might I not array against you the whole series of ancient writers? Ignatius, Polycarp, Irenæus, Justin Martyr, and many other apostolic and eloquent men, who against Ebion, Theodotus of Byzantium, and Valentinus, held these same views, and wrote volumes replete with wisdom. If you had ever read what they wrote, you would be a wiser man. But I think it better to reply briefly to each point than to linger any longer and extend my book to an undue length.
Source: The Perpetual Virginity of Blessed Mary (New Advent)