τὸ τῆς θαλάσσης κράτος

From LSJ

τί γὰρ καλὸν ζῆν βίοτον, ὃς λύπας φέρει → for what good is there to live a life that brings pain

Source

Greek > English (Woodhouse)

maritime empire, the command of the sea

Dutch (Woordenboekgrieks.nl)

de heerschappij op zee