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Ζῆν οὐκ ἄξιος, ὅτῳ μηδὲ εἷς ἐστι χρηστὸς φίλος → Life is not worth living if you do not have at least one friend.
poét. c. τεοῖς, dat. pl. de τεός.
τεοῖσι: поэт. = τεοῖς (dat. pl. к τεός).