The sentence in question is “φησὶ γὰρ ἁνὴρ
οὐχ ὑπ᾽ ἀνοίας τοῦτο πεπονθὼς διατρίβειν, ἀλλὰ νομίζων
κωμῳδοδιδασκαλίαν εἶναι χαλεπώτατον ἔργον ἁπάντων:”
Eugene O’Neill’s translation is “This is what he bids us say in reply to your questions; it is not without grounds that he has courted the shade, for, in his opinion, nothing is more difficult than to cultivate the comic Muse” but, while this may be most accurate in English, it does not seem to be a very literal translation. Can someone provide a more literal translation?