73. οἱ δὲ δύω σκόπελοι ὁ μὲν οὐρανὸν εὐρὺν ἱκάνει
Circe is describing to Odysseus the second way to his homeland. The first she described at 59. Here is the context and the structure of the antithesis marked by the correlation μέν...δέ:
56. ἔνθα τοι οὐκέτ᾽ ἔπειτα διηνεκέως ἀγορεύσω,
57. ὁπποτέρη δή τοι ὁδὸς ἔσσεται, ἀλλὰ καὶ αὐτὸς
58. θυμῷ βουλεύειν: ἐρέω δέ τοι ἀμφοτέρωθεν.
59. ἔνθεν μὲν γὰρ ...