St. Mark, in his new reply to these statements, repeats the Orthodox view that “it is possible for one to be a Teacher and all the same not say everything absolutely correctly, for what need then would the Fathers have had for Ecumenical Councils?—and such private teachings (as opposed to the infallible Scripture and Church Tradition) “we must not believe absolutely or accept without investigation.” He then goes into great detail, with many citations from his works, to show that St. Gregory of Nyssa actually did teach the error ascribed to him (which is nothing less than the denial of eternal torment in hell, and universal salvation), and gives the final authoritative word on this matter to Augustine himself. 

“That only the canonical Scriptures have infallibility is testified by Blessed Augustine in the words which he writes to Jerome: ‘It is fitting to bestow such honor and veneration only to the books of Scripture which are called “canonical,” for I absolutely believe that none of the authors who wrote them erred in anything…. As for other writings, no matter how great was the excellence of their authors in sanctity and learning, in reading them I do not accept their teaching as true solely on the basis that they thus wrote and thought.‘ Then, in a letter to Fortunatus [St. Mark continues in his citations of Augustine] he writes the following: ‘We should not hold the judgment of a man, even though this man might have been orthodox and had a high reputation, as the same kind of authority as the canonical Scriptures, to the extent of considering it inadmissible for us, out of the reverence we owe such men, to disapprove and reject something in their writing if we should happen to discover that they taught other than the truth which, with God’s help, has been attained by others or by ourselves. This is how I am with regard to the writings of other men; and I desire that the reader will act thus with regard to my writings also.” (St. Mark, “Second Homily on Purgatorial Fire,” chs. 15-16; Pogodin, pp. 127-32).

The Place of Blessed Augustine in the Orthodox Church
Fr. Seraphim Rose