Τὸ γὰρ περισσὰ πράσσειν οὐκ ἔχει νοῦν οὐδένα → There is no sense in doing things beyond the usual measure
v. trans.
P. and V. εὐφραίνειν, τέρπειν, V. εὐθυμεῖν (Aesch., Frag.).