"Let me tell you about the Romans. They are the robbers of this world. When they've thieved everything on land, they'll rob the sea. If their enemies are rich, they'll take all they have. If their enemies are poor, they'll make slaves of them. Their work is robbery, slaughter, plunder. They do this work and they call it empire. They make deserts and they call it peace."
(That's a really good speech. Who wrote this episode?)

Rona Munro, who wrote "Survival", the final episode of the final season of Classic Who. So she has form, having written that magnificent final speech of the Seventh Doctor: "There are worlds out there where the sky is burning, where the sea's asleep and the rivers dream, people made of smoke and cities made of song. Somewhere there's danger, somewhere there's injustice and somewhere else the tea is getting cold. Come on, Ace, we've got work to do."