Τὸ γὰρ περισσὰ πράσσειν οὐκ ἔχει νοῦν οὐδένα → There is no sense in doing things beyond the usual measure
αὐστηρός, ἀτρύφερος, ἀτρύφητος, ἄθρυπτος, ἄτρυφος, αὐσταλέος, ἀνυπέραρτος