Yes, well there are some things I have not seen. That's usually because I have chosen not to see them. Even my incredibly long life is too short for Les Miserables.

The Doctor

Clara: I'm actually frightened I never get frightened why am I frightened?
The Doctor: You just lost a little girl.
Clara: Yes, that is a worry, but I know you'll find her. No no no. This, this is not worry. This is a threat.

I just informed you the planet is going to be razed by a solar flare and you're concerned about a row with your boyfriend.

The Doctor

The Doctor: I can save you.
Clara: I don't want you to.
The Doctor: You don't want to live?
Clara: Of course I want to live, I just...
The Doctor: What?
Clara: Don't make me say it.
The Doctor: I don't want to be the last of my kind.

I was wrong. The trees are not your enemy, they're your shield. They've been saving you since forever, protecting you from everything that space can throw at you.

The Doctor

What is it with you people? You hear voices you wanna shut them up, the trees come to save you, you want to chop them down.

The Doctor

Danny I will never say those words again, not to anybody else. Ever. Those words from me are yours now.

Clara

You told me once what it would take to destroy a TARDIS key. That's what's so good about lava. All seven from all of your hiding places.

Clara

The Doctor: If I change the events that brought you here, you will never come her and ask me to change those events! Paradox loop. The timeline disintegrates, your timeline, and yes!
Clara: Yes?
The Doctor: I did just say no. Throw away the key.

The Doctor: Clara? You asked me what we're going to do, I told ya. We're going to go to hell, or wherever it is people go when they die, if there is anywhere. Whatever it is we're gonna go there and we're gonna find Danny. And if it is in any way possible, we're going to bring him home. Every culture has a concept of an afterlife. I always meant to have a look around, see if I could find one.
Clara: You're going to help me?
The Doctor: Well, why wouldn't I help you?
Clara: Because of what I just did, I just...
The Doctor: You betrayed me. You betrayed our trust, you betrayed our friendship, you betrayed everything that I've ever stood for. You let me down!
Clara: Then why are you helping me?
The Doctor: Why? Do you think that I care for you so little that betraying me would make a difference?

Missy: My heart is maintained by The Doctor.
The Doctor: Doctor who?
Missy: Doctor Chang!!!

I made you a souffle, but it was too beautiful to live.

Oswin

Doctor Who Quotes

There's a horror movie named Alien? That's really offensive. No wonder everybody keeps invading you.

The Doctor

The Doctor: It's a risk.
Graham: Oh, like none of our other trips have ever been risky.
The Doctor: I have apologized for the Death Eye Turtle Army! Profusely.