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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.
marcus: i, m. cf. Sanscr. mar, mrid, to break, crush,I a large hammer, Isid. Orig. 19, 7, 2, v. 1. marculus.