τὸ κοινόν
From LSJ
ζῆν οὐκ ἄξιος, ὅτῳ μηδὲ εἷς ἐστι χρηστὸς φίλος → life is not worth living if you do not have at least one friend
Greek > English (Woodhouse)
body politic, public treasury, state treasury, the body politic, the common cause, the public exchequer, the public good, the public interests, the public