5 As for my poor works which from no merits of theirs but simply from your own kindness you say that you desire to have; I have given them to your servants to transcribe, I have seen the paper-copies made by them, and I have repeatedly ordered them to correct them by a diligent comparison with the originals. For so many are the pilgrims passing to and fro that I have been unable to read so many volumes. They have found me also troubled by a long illness from which this Lent I am slowly recovering as they are leaving me.
If then you find errors or omissions which interfere with the sense, these you must impute not to me but to your own servants; they are due to the ignorance or carelessness of the copyists, who write down not what they find but what they take to be the meaning, and do but expose their own mistakes when they try to correct those of others. It is a false rumour which has reached you to the effect that I have translated the books of Josephus and the volumes of the holy men Papias and Polycarp. I have neither the leisure nor the ability to preserve the charm of these masterpieces in another tongue.
Of Origen and Didymus I have translated a few things, to set before my countrymen some specimens of Greek teaching. The canon of the Hebrew verity — except the octoteuch which I have at present in hand— I have placed at the disposal of your slaves and copyists. Doubtless you already possess the version from the septuagint which many years ago I diligently revised for the use of students. The new testament I have restored to the authoritative form of the Greek original. For as the true text of the old testament can only be tested by a reference to the Hebrew, so the true text of the new requires for its decision an appeal to the Greek.
Source: Letters (New Advent)