οὐ γὰρ ἂν τό γε πραχθὲν ἀγένητον θείη → since he cannot make what was done as though it had not come to pass
-η, -ο (Α ἐνσπέρματος, -ον) σπέρμα(για καρπούς) αυτός που έχει μέσα του σπέρμα.