ὑγίεια καὶ νοῦς ἀγαθὰ τῷ βίῳ δύο → health and brains are the two good things for life
v. δύναμαι.
ἠδυνήθην: (= ἐδυνήθην) Aesch., Thuc. aor. к δύναμαι.