αὐτάρκης ἔσῃ, ἂν μάθῃς τί τὸ καλὸν κἀγαθόν ἐστι → you will be contented with your lot if you learn what the honourable and good is
καταποθῆναι: inf. aor. pass. к καταπίνω.
καταποθῆναι inf. aor. pass. van καταπίνω.