"We're gonna build a whole new world for ourselves. Look, they clap eyes on us and we're dead, right? So we gotta make a new life where they'll never find us. You know where? Underground. You should see it down there – hundreds of miles of drains – sweet and clean now after the rain. Dark, quiet, safe. We can build houses and everything, start again from scratch. And what's so bad about living underground, eh? It's not been so great living up there, if you want my opinion."