Eunapius, Lives of the Philosophers 4.1.9: On the Clarity of Porphyry

“Although some philosophers conceal their teachings in obscure phrase, just as poets hide theirs in myth, Porphyry praised clarity as a cure-all, and because he had sampled it in his own experience, he inscribed it in his work and brought it back to daylight.”

τῶν δὲ φιλοσόφων τὰ ἀπόρρητα καλυπτόντων ἀσαφείᾳ, καθάπερ τῶν ποιητῶν τοῖς μύθοις, ὁ Πορφύριος τὸ φάρμακον τῆς σαφηνείας ἐπαινέσας καὶ διὰ πείρας γευσάμενος, ὑπόμνημα γράψας εἰς φῶς ἤγαγεν.