Jerome. Lives of Illustrious Men 119
119 Diodorus the bishop PL 23, 709
Diodorus, bishop of Tarsus enjoyed a great reputation while he was still presbyter of Antioch. Commentaries of his On the epistles are extant, as well as many other works in the manner of Eusebius the great of Emesa, whose meaning he has followed, but whose eloquence he could not imitate on account of his ignorance of secular literature.
Diodorus, Tarsensis episcopus; dum Antiochiae esset presbyter, magis claruit. Exstant ejus in Apostolum commentarii, et multa alia, ad Eusebii magis Emiseni characterem pertinentia, cujus cum sensum secutus sit, eloquentiam imitari non potuit, propter ignorantiam saecularium litterarum.
Διόδωρος, Ταρσοῦ ἐπίσκοπος ἡνίκα ἦν Ἀντιοχείας πρεσβύτερος, μᾶλλον λαμπρὸς ἦν. Εἰσὶ τούτου εἰς τὸν Ἀπόστολον ὑπομνήματα, καὶ ἕτερα πλεῖστα εἰς τὸν Εὐσεβίου μᾶλλον τοῦ Ἐμεσηνοῦ χαρακτῆρα προσήκοντα, οὗτινος τῇ γνώμῃ ἀκολουθήσας, τὸ ἐλλόγιμον οὐκ ἠδυνήθη μιμήσασθαι, διὰ τὴν ἀπειρίαν τῶν κοσμικῶν γραμμάτων.