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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.
from עָקַב; heel-catcher (i.e. supplanter); Jaakob, the Israelitish patriarch: Jacob.
