κενόφωνος

μή, φίλα ψυχά, βίον ἀθάνατον σπεῦδε, τὰν δ' ἔμπρακτον ἄντλει μαχανάν → Oh! my soul do not aspire to eternal life, but exhaust the limits of the possible. | Do not yearn, O my soul, for immortal life! Use to the utmost the skill that is yours. | Do not, my soul, strive for the life of the immortals, but exhaust the practical means at your disposal.

Greek (Liddell-Scott)

κενόφωνος: -ον, ὁ κενὰ φωνάζων, ἀνόητα λέγων, Βυζ.

κενόφωνος, -ον (Μ)
αυτός που λέγει ανοησίες.
[ΕΤΥΜΟΛ. < κεν(ο)- + -φωνος (< φωνή), πρβλ. γλυκύ-φωνος, μεγαλό-φωνος].