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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.
cardŭs, ūs, m. Capit. Pert. 12, 2 ; Diocl. 6, 1, et cardŭus, ī, m., chardon : Virg. G. 1, 151