Ζῆν οὐκ ἄξιος, ὅτῳ μηδὲ εἷς ἐστι χρηστὸς φίλος → Life is not worth living if you do not have at least one friend.
subs.
P. and V. μανία, ἡ, ἀφροσύνη, ἡ, τὸ μανιῶδες; see madness. Folly: P. and V. μωρία, ἡ, ἄνοια, ἡ, ἀβουλία, ἡ, ἀσυνεσία, ἡ (Eur., Frag.); see folly.