Do Not Seek Immortal Life

Pindar, Pythian Odes 3.61-62 (tr. Anthony Verity):

Do not, my soul, long for an immortal life,
but make the most of what you can realistically achieve.

μή, φίλα ψυχά, βίον ἀθάνατον
σπεῦδε, τὰν δ' ἔμπρακτον ἄντλει μαχανάν.

Gildersleeve on line 62:

"Exhaust all practicable means," "drain each resource."