Τὸ μανθάνειν δ' ἥδιστον εὖ λέγοντος, εἰ κέρδος λέγοι → It is the sweetest thing to learn from one speaking well, if they speak profitably
see φράζω.
πέφρᾰδον: эп. (= ἐπέφραδον) aor. 2 к φράζω.