Ζῆν οὐκ ἄξιος, ὅτῳ μηδὲ εἷς ἐστι χρηστὸς φίλος → Life is not worth living if you do not have at least one friend.
middle voice from ἀνά and γνωρίζω; to make (oneself) known: be made known.
se faire reconnaître