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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.
abundance: P. ἀφθονία, ἡ.
fruitfulness: P. πολυφορία, ἡ (Xen.).