Ζῆν οὐκ ἄξιος, ὅτῳ μηδὲ εἷς ἐστι χρηστὸς φίλος → Life is not worth living if you do not have at least one friend.
nae: vulgar form for nē (v. 3. ne), particle of assurance,I verily, truly.
næ, forme vulgaire pour nē 1.
nae, Adv., s. 1. nē.