οὐκ ἐν τῷ πολλῷ τὸ εὖ, ἀλλ' ἐν τῷ εὖ τὸ πολύ → good is not found in plenty but plenty in good, quality matters more than quantity
Ar. and P. εὔρυθμος.
rhythmic beat of oar: V. κώπης συνεμβολή (Aesch., Persae 396).