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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.
subs.
P. and V. μυριάς, ἡ (Eur., Bacch. 745), as adj., use P. and V. μυρίοι.