Τὸ γὰρ περισσὰ πράσσειν οὐκ ἔχει νοῦν οὐδένα → There is no sense in doing things beyond the usual measure
P. and V. τὰ πλεῖστα, P. ὡς ἐπὶ πολύ, τὰ πολλὰ, ὡς τὰ πολλά, V. τὰ πλείω.