GWEN: But if there's nothing, what's the point of it all?

SUZIE: This is. Driving through the dark. All this stupid, tiny stuff. We're just animals howling in the night, because it's better than silence. I used to think about Torchwood, all those aliens, coming to Earth, what the hell for? But it's just instinct. They come here because there's life, that's all. Moths around a flame. Creatures clinging together in the cold.