"In the case of Tertullian we praise his great talent, but we condemn his heresy. In that of Origen we admire his knowledge of the Scriptures, but nevertheless we do not accept his false doctrine. As to Didymus, however, we extol both his powers of memory, and the purity of his faith in the Trinity, while on the other point in which he erred in trusting to Origen we withdraw from him. The vices of our teachers are not to be imitated, their virtues are."