Τὸ γὰρ περισσὰ πράσσειν οὐκ ἔχει νοῦν οὐδένα → There is no sense in doing things beyond the usual measure
ac CONJ :: and, and also, and besides
ac:I conj., v. atque.
ac,³ v. atque.
ac, Conjunct., s. atque.