ἑκατέρωθεν
From LSJ
Βέβαιον οὐδέν ἐστιν ἐν θνητῷ βίῳ → Nihil, ut videtur, proprium in vita datur → Nichts Festes gibt's im Leben eines Sterblichen
English (LSJ)
Adv.
A on each side, on either hand, Hdt.3.102, Th.2.75 : c. gen., ἑ. τῆς πόλεως Id.3.6 ; τὸ ἑ. μέρος Pl.Phd.112e ; at each end, Gp.5.27.4. 2 on both sides, by father and mother, Poll.8.85.