ἄτερθε
From LSJ
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.
English (LSJ)
[ᾰ], before a vowel ἀτέραμν-θεν, Aeol. ἄτερθα Hdn.Gr.2.192,
A = ἄτερ, Pi.O.9.78, etc.: c.gen., ἄ. πτερύγων A.Supp.783 (lyr.); λατρῶν ἄ. ib.1011; ἄ. τοῦδε S.Aj.645 (lyr.). II as Adv., aloof, apart, Pi.P.5.96.
German (Pape)
[Seite 385] vor Vokalen ἄτερθεν, = ἄτερ, poet., τινός Pind. Ol. 9, 84; Tragg., z. B. Aesch. Suppl. 764 Soph. Ai. 630; Sp.