γελᾷ δ' ὁ μωρός, κἄν τι μὴ γέλοιον ᾖ → the fool laughs even when there's nothing to laugh at
Λάχης, -ητος, ὁ.
Lăchēs: m.,I name of an old man, Ter. Eun. 5, 5; id. Hec. 1, 2, 59; 2, 1, and 2.
Lăchēs,¹⁶ ētis, m. (Λάχης), général athénien : Cic. Div. 1, 123