θεν
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.
English (LSJ)
old termin. of the gen., as in ἐμέθεν, Διόθεν, etc.: freq. with Ablatival sense, denoting
A motion from a place, as in Λεσβόθεν, Ἀβυδόθεν, ἄλλοθεν, οἴκοθεν, etc.: so with Preps., ἀπὸ Τροίηθεν Od.9.38; ἐξ οὐρανόθεν Il.8.19, cf. A.D.Adv.184.12 sq.: most of the forms in -οθεν were parox., exc. οἴκοθεν, ἄλλοθεν, πάντοθεν (sts. παντόθεν) , ἔκτοθεν, ἔνδοθεν, ib.191.27 sq. (other exceptions in Hdn.Gr.1.500).