If you think because she is dead that I am weak, then you understand very little. If you were any part of killing her, and you’re not afraid, then you understand nothing at all. So, for your own sake, understand this. I am the Doctor, I'm coming to find you, and I will never, ever stop.
Heaven Sent
Of course I had to jump! The first rule of being interrogated is that you are the only irreplaceable person in the torture chamber. The room is yours -- so work it. If they're gonna threaten you with death, show them who's boss! Die faster.
It’s funny. The day you lose someone isn’t the worst. At least you’ve got something to do. It’s all the days they stay dead.
There are two events in everybody's life that nobody remembers. Two moments experienced by every living thing, yet no one remembers anything about them. Nobody remembers being born... And nobody remembers dying. Is that why we always stare into the eye sockets of a skull? Because we’re asking - "what was it like? Does it hurt? Are you still scared?"
I can't keep doing this, Clara! I can't! Why's it always me?! Why's it never anybody else's turn?!
[He looks round -- the blackboard on the upper walkway. It still reads: "Question 3: How are you going to WIN??"]
Can't I just lose? Just this once?
I can't keep doing this! I can't! I can't... always do this! It's not fair! It's not fair, Clara! Why can't I just lose?!
[He spins round on Clara -- still standing with her back to him. But chalked on the blackboard in front of her, a single word: "No!"]
But I can remember, Clara. You don't understand. I can remember it all. Every time.
[Just the word "No!"]
And you'll still be gone. Whatever I do... You still won't be there.
[The Doctor sags. Like that admission ripped the heart out of him. And then, impossibly - her voice.]
Doctor. You are not the only person who ever lost someone. It’s the story of everybody. Get over it. Beat it. Break free.
[She steps towards him, puts a hand to his face.]
Doctor, it's time. Get up, off your arse, and win.
This place is my own bespoke torture chamber. Intended for me only. But all those skulls in the water... How could there be other prisoners in my hell? The answer, of course, is that there were never any other prisoners. And the stars... They weren't in the wrong place. And I haven't time-traveled. I've just been here a very... very... long time.
[while repeatedly punching the Azbantium wall in an attempt to break through it] The Hybrid is a very dangerous secret. A very, very dangerous secret and it needs to be kept! So I'm telling you nothing. Nothing at all. Instead, I'm going to do something far worse. I'm going to get out of here, and find whoever put me here in the first place, and whatever they're trying to do, I'm going to stop it! But it might take me a little while, so do you want me to tell you a story? The Brothers Grimm, lovely fellas. They're on my darts team. According to them, there's this emperor and he asks this shepherd's boy, "How many seconds in eternity?"
[20 million years in the future]
And the shepherd's boy says, "There's this mountain of pure diamond. It takes an hour to climb it and an hour to go around it!"
[52 million years in the future]
"Every hundred years, a little bird comes and sharpens its beak on the diamond mountain."
[Nearly a billion years in the future]
"And when the entire mountain is chiseled away, the first second of eternity will have passed!"
[Well over a billion years in the future]
You must think that's a hell of a long time.
[After about 4.5 billion years]
Personally, I think that's a hell of a bird.
Go to the city, find somebody important. Tell them I'm back, and I'm on my way. And if they ask you who I am, tell them I came the long way round.
Hell Bent
Nothing's sad till it's over. Then everything is.
WThe Woman
Why are they ringing all the bells?! Never heard so many! What's gone wrong this time, all the fuss they're always making...
[She notices the Doctor atop the barn.]
WThe Woman
You up there, you're not supposed to be there! I'll just put all that back, it's for the boys. If any of them ever want to come--
[She stops. Takes a beat, clearly recognizing him.]
WThe Woman
They'll kill you.
SSoldier
There was a saying, sir, in the Time War.
RRassilon
A saying?
SSoldier
First thing you notice about the Doctor of War is he's unarmed. For many, it's also the last.
Is this a story, or did this really happen?
Every story ever told really happened. Stories... are where memories go when they're forgotten.
Do you know what they did to me? The Confession Dial is a ritual act of purification. It allows a dying Time Lord to face his demons, make his peace before his mind is uploaded to the Matrix. It was never intended as a torture chamber for the living!
Rassilon grew concerned about the coming of the Hybrid.
Afraid.
You were entrapped and imprisoned at his command.
And look at him now.
Why did you banish him? Was it punishment, or for your own protection? Were you just being cruel, or just being cowardly?
One question. And you will answer: How long was the Doctor inside the Confession Dial?
We think... four-and-a-half billion years.
He could've left any time he wanted, he just had to say what he knew. The Dial would've released him.
[Clara turns to face the Doctor, horrified.]
Four-and-a-half billion years?
If she says so.
No! Why would you even do that? I was dead! I was dead and gone! Why? Why would you even do that to yourself?!
I had a duty of care!
These quotes come from Wikiquote's Doctor Who pages and are available under the Creative Commons Attribution-ShareAlike License.