2 It is charged against me that I have sometimes praised Origen. If I am not mistaken I have only done so in two places, in the short preface (addressed to Damasus) to his homilies on the Song of Songs and in the prologue to my book of Hebrew Names. In these passages do the dogmas of the church come into question? Is anything said of the Father, the Son, and the Holy Ghost? Or of the resurrection of the flesh? Or of the condition and material of the soul? I have merely praised the simplicity of his rendering and commentary and neither the faith nor the dogmas of the Church come in at all.
Ethics only are dealt with and the mist of allegory is dispelled by a clear explanation. I have praised the commentator but not the theologian, the man of intellect but not the believer, the philosopher but not the apostle. But if men wish to know my real judgement upon Origen; let them read my commentaries upon Ecclesiastes, let them go through my three books upon the epistle to the Ephesians: they will then see that I have always opposed his doctrines. How foolish it would be to eulogize a system so far as to endorse its blasphemy!
The blessed Cyprian takes Tertullian for his master, as his writings prove; yet, delighted as he is with the ability of this learned and zealous writer he does not join him in following Montanus and Maximilla. Apollinaris is the author of a most weighty book against Porphyry, and Eusebius has composed a fine history of the Church; yet of these the former has mutilated Christ's incarnate humanity, while the latter is the most open champion of the Arian impiety. “Woe,” says Isaiah, “unto them that call evil good and good evil; that put bitter for sweet and sweet for bitter.” We must not detract from the virtues of our opponents— if they have any praiseworthy qualities— but neither must we praise the defects of our friends.
Each several case must be judged on its own merits and not by a reference to the persons concerned. While Lucilius is rightly assailed by Horace for the unevenness of his verses, he is equally rightly praised for his wit and his charming style.
Source: Letters (New Advent)