Doctor: When we met I said, "Travel with me in space." You said, "No." Then I said, "Time machine."

Rose Tyler: It wasn't some big plan. I just saw it happening, and I thought, "I can stop it."

Doctor: I did it again. I picked another stupid ape. I should have known. It's not about showing you the universe. it never is. It's about the universe doing something for you.

Rose Tyler: So it's okay when you go to other times and you save people's lives but not when it's me saving my dad?

Doctor: I know what I'm doing, you don't.