Oh, for heaven's sake! Look at the pair of you, we're all going to die here and you're just squabbling like an old married couple!
[The Doctor and Professor River Song look at each other in emotional surprise.]
“Forest of the Dead”
In this episode: Tenth Doctor (4), River Song (3), Donna (1), Strackman Lux (1)
VNVashta Nerada
These are our forests, they are our meat. [Spreads out to attack the Doctor]
Don't play games with me. You just killed someone I liked and that is not a safe place to stand! [The Vashta Nerada continue to spread] I'm the Doctor and you're in the biggest Library in the universe. Look me up.
VNVashta Nerada
[retreating] You have one day.
Why am I handcuffed? Why would you even have handcuffs?
[Playfully flirtatious] Spoilers.
River Song [speaking to the handcuffed Doctor, as she realizes she must sacrifice her own life to keep the Doctor from sacrificing his]: Funny thing is, this means you've always known how I was going to die. All the time we've been together, you knew I was coming here. The last time I saw you, the real you — the future you, I mean — you turned up on my doorstep, with a new haircut and a suit. You took me to Darillium to see the singing towers. Oh, what a night that was! The towers sang, and you cried. You wouldn't tell me why, but I suppose you knew it was time. My time. Time to come to the Library. You even gave me your screwdriver; that should've been a clue. [The Doctor tries unsuccessfully to reach their sonic screwdrivers] There's nothing you can do.
You can let me do this!
If you die here, it'll mean I've never met you!
Time can be rewritten!
Not those times. Not one line! Don't you dare! It's OK. It's OK, it's not over for you. You'll see me again. You've got all of that to come. You and me, time and space. You watch us run!
[River starts to weep.]
River, you know my name. You whispered my name in my ear! There's only one reason I would ever tell anyone my name. There's only one time I could...
[Smiling sweetly at the Doctor as the countdown reaches zero] Hush, now... Spoilers!
[Voice-over, as the Doctor and Donna walk away] When you run with the Doctor, it feels like it'll never end. But however hard you try you can't run forever. Everybody knows that everybody dies and nobody knows it like the Doctor. But I do think that all the skies of all the worlds might just turn dark if he ever, for one moment, accepts it.
[The Doctor runs back and picks up River's sonic screwdriver]
Why? Why would I give her my screwdriver? Why would I do that? The thing is, future me had years to think about it. All those years to think of a way to save her, and what he did was give her a screwdriver! Why would I do that?! [peels back a panel to reveal a set of green lights like on the suits, realizing why his future self has given River the screwdriver] Oh, oh, oh! Look at that! I'm very good!
What have you done?
Saved her! [runs with River's consciousness in the screwdriver] Stay with me! You can do it! Stay with me! Come on!! You and me, one last run!
These quotes come from Wikiquote's Doctor Who pages and are available under the Creative Commons Attribution-ShareAlike License.