- Riley Vashtee: [reading from display] Find the next number in the sequence: 313, 331, 367...? What?
- Martha Jones: You said the crew knew all the answers!
- Riley Vashtee: The crew's changed since we set the questions.
- Martha Jones: You're joking!
- The Doctor: 379!
- Martha Jones: What?
- The Doctor: It's a sequence of happy primes - 379!
- Martha Jones: Happy what?
- The Doctor: Just enter it!
- Riley Vashtee: Are you sure? We only get one chance.
- The Doctor: Any number that reduces to one when you take the sum of the square of its digits and continue iterating it until it yields 1 is a happy number, any number that doesn't, isn't. A happy prime is both happy and prime. Now type it in!
- [aside]
- The Doctor: I dunno, talk about dumbing down. Don't they teach recreational mathematics anymore?
- The Doctor: We need a backup in case they don't reach the auxiliary engines in time. Come on, think! Resources! What have we got?
- Martha Jones: [over intercom] Doctor?
- The Doctor: What is it now?
- Martha Jones: Who had the most number ones: Elvis or the Beatles? That's pre-download.
- The Doctor: Elvis. No! The Beatles. No! Wait, um... um... oh, there was that remix, um... I don't know! I am a bit busy.
- Martha Jones: Fine, I'll ask someone else.
- The Doctor: Now, where was I? "Here Comes The Sun". No, resources!
- The Doctor: Ten seconds. That's all I'll be able to take. No more. Ahh, ahh, ahhh! Martha!
- Martha Jones: Yeah?
- The Doctor: It's burning me up. I can't control it. If you don't get rid of it, I could kill you. I could kill you all.
- [lets out a groan of pain]
- The Doctor: I'm scared. I'm so scared.
- Martha Jones: Just stay calm. You saved me, now I return the favor. Just believe in me.
- The Doctor: [in pain] You mined that sun. Skipped its surface for cheap fuel. You should've scanned for life!
- Kath McDonnell: I don't understand.
- Martha Jones: Doctor, what are you talking about?
- The Doctor: That sun's alive. A living organism. They scooped out its heart. Used it for fuel and now it's screaming!
- Kath McDonnell: What do you mean? How can a sun be alive? Why is he saying that?
- The Doctor: Because it's living in me.
- Kath McDonnell: [gasps] Oh my god.
- The Doctor: Humans! You grabbed whatever is nearest and bleed it dry! You should've scanned!
- Kath McDonnell: It takes too long. We'd be caught. Fusion scans are illegal.
- The Doctor: [screams in pain] Martha! You got to freeze me quickly!
- Martha Jones: What?
- The Doctor: Stasis chamber. You got to take me below minus 200. Freeze it out of me!
- [groans in pain]
- The Doctor: It'll use me to kill you if you don't. The closer we get to the sun, the stronger the link! Med center! Quickly!
- Martha Jones: [to Capt. McDonnell] Help me!
- The Doctor: [over the intercome] Keep moving fast as you can. And, Martha, be careful. There may be something else onboard the ship.
- Martha Jones: [sarcastically] Any time you want to unnerve me, feel free.
- The Doctor: Will do, thanks.
- [first lines]
- The Doctor: Well, there we go, universal roaming.
- [tosses Martha her newly altered cell phone]
- The Doctor: Never have to worry about a signal again.
- Martha Jones: No way. This is too mad. You're telling me I can phone anyone anywhere in space and time on my mobile?
- The Doctor: As long as you know the area code.
- Riley Vashtee: The wonderful world of space travel. The prettier it looks, the more likely it is to kill you.
- Riley Vashtee: These doors' trip code is the answer to a random question set by the crew. Nine tours back, we got drunk, thought them up. Reckoning was, if we're hijacked, we're the only ones who know all the answers.
- Martha Jones: So you type in the right answer...
- Riley Vashtee: This sends a remote pulse to the clamp. But we only get one chance per door. Get it wrong, the whole system freezes.
- Martha Jones: Better not get it wrong, then.
- Riley Vashtee: Okay.
- [reading]
- Riley Vashtee: 'Date of the SS Pentalian's first flight?' That's all right. Go!
- Martha Jones: [door opens] Yes!
- Riley Vashtee: Twenty eight more to go!
- [Later]
- Riley Vashtee: [reading] 'Find the next number in the sequence: 313, 331, 367...?' What?
- Martha Jones: You said the crew knew all the answers.
- Riley Vashtee: The crew's changed since we set the questions.
- Dev Ashton: [over the intercom] Erina, get back here with that equipment.
- Erina Lessak: [hits the mute button] Whatever you say, boss. "Go there. Come back. Fetch this. Carry these. Make drinks. Sweep up." Please, kill me now.
- Hal Korwin: Burn with me. Burn with me.
- Orin Scannell: What's your favorite color?
- Riley Vashtee: You what?
- Orin Scannell: It's the question.
- Riley Vashtee: Purple.
- [Orin begins to type in the answer]
- Riley Vashtee: Or did I say orange?
- Orin Scannell: Come on!
- Francine Jones: Is that all?
- Sinister Woman: For now. Have you voted?
- Francine Jones: Of course. Just don't expect me to tell you who for.
- Sinister Woman: Thanks for all your doing, Mrs. Jones. Mister Saxon will be very grateful.
- The Doctor: [just after leaving the ship inside the TARDIS] By the way, you'll be needing this.
- [reveals a TARDIS key hanging on a string]
- Martha Jones: Really?
- The Doctor: Frequent fliers privilege.
- [Martha hold out both hands, excited; The Doctor places the key in her palms]
- Martha Jones: Thank you.
- The Doctor: Don't mention it.