λυτήριον

From LSJ

αἰὲν ἀριστεύειν καὶ ὑπείροχον ἔμμεναι ἄλλων → always strive for excellence and prevail over others (Iliad 6.208, 11.784)

Source

Russian (Dvoretsky)

λῠτήριον: τό способ освобождения, средство избавления (τὸ κακῶν λ. Soph.).