DOCTOR: Do you know how lonely you are? You live in a great, big, giant spaceship and there aren't any chairs! And you haven't even noticed because nobody ever comes round!

DOCTOR: We're binary.

DONNA: She's not, because the Doctor's…

DOCTOR: ..male…

DONNA: ..and female.

ROSE: And neither. And more.

TOSH: Owen, just stay calm.

OWEN: Oh, why should I do that? Where's the fun in that? I'm gonna rage my way to oblivion.

TOSH: Please don't.

OWEN: Why? Give me one good bloody reason why. One good reason why I shouldn't keep screaming.

TOSH: Because you're breaking my heart.

DOCTOR: What do you want me to be? Someone who knows exactly what he’s doing and has it all under control, or just some fellow who makes it up as he goes along, and still makes it happen? Which do you want it to be? Magic tricks, or magic?

CALDWELL: Are you some kind of scientist?

DOCTOR: I'm every kind of scientist.