"To love a TV show is to know one of two things: Either it will eventually leave you, or you will eventually leave it. There’s no middle ground for the committed. Once you’re in, you’re in, and you’re going to be in until the thing is canceled or until you lose interest because you’ve either figured out all of the show’s tricks or it’s just not the same anymore. That show you loved more than anything? It will eventually feel sort of old and pointless to you after a while, and you’ll have moved on to some new thing that feels fresher but will inevitably disappoint you somewhere down the line. And so it goes. You’ll someday remember that show you loved with such intensity—it will probably be off the air by this point—and you’ll wonder idly why they don’t make ’em like that anymore. The answer is because you’re not who you were anymore, and you can’t fall for a show like that because you’re no longer the same person."
"I thought the story of Rose, which was beautiful, was done. I didn’t want to add to it, and I didn’t feel comfortable adding to it, really. That was always [former Doctor Who showrunner] Russell [T Davies]‘s story. But we did want Billie. And I liked the idea of bringing back the Bad Wolf version. The way Russell ended it in “The End of Time,” by just sort of looping it around, was perfect. I didn’t want to stick another bit of it in. That would be wrong. I just wanted to get Billie Piper, one of the absolute heroes of Doctor Who, back in the show, but without interfering with the story of Rose Tyler. I just thought I might spoil something. I might trip over my bootlaces doing that."