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From LSJ
Ζῆν οὐκ ἄξιος, ὅτῳ μηδὲ εἷς ἐστι χρηστὸς φίλος → Life is not worth living if you do not have at least one friend.
Russian > Greek
ἅλις, ἐξαρκούντως, ἱκανῶς, ἀποχρώντως, ἀρκούντως, ἀρκεόντως, ἐπαρκούντως, ἀγαπητῶς, ἐπιεικῶς, μετρίως