Juvenal satirises insatiable ambition.
‘Acti,’ inquit, ‘nihil est, nisi Poeno milite portas frangimus et media vexillum pono Subura.’
‘Nothing is achieved’, he said, ‘unless we break the gates with a Carthaginian soldier and I plant the banner in the heart of Subura.’
Acti: driven, led. In context here, it means an action that has happened.
Inquit: he says
Nihil est: nothing is
Nisi: unless
Poeno: by means of Carthaginian
Milite: by means of soldier
Portas: gates
Frangimus: we break
Et: and
Media: in the middle of
Vexillum: military standard, banner
Pono: I place, plant
Subura: ablative of the district of Rome