36 Then of the New Testament there are the four Gospels only, for the rest have false titles and are mischievous. The Manichæans also wrote a Gospel according to Thomas, which being tinctured with the fragrance of the evangelic title corrupts the souls of the simple sort. Receive also the Acts of the Twelve Apostles; and in addition to these the seven Catholic Epistles of James, Peter, John, and Jude; and as a seal upon them all, and the last work of the disciples, the fourteen Epistles of Paul. But let all the rest be put aside in a secondary rank. And whatever books are not read in Churches, these read not even by yourself, as you have heard me say. Thus much of these subjects.
Source: Catechetical Lectures (New Advent)