Clara: I have to go in there.
The Doctor: Please, please no.
Clara: This is what I've already done. You've already seen me do it. I'm the Impossible Girl.

Dear Goddess. The universe without The Doctor, there will be consequences.

Madame Vastra

The Doctor's life is an open wound. And an open wound can be entered.

Great Intelligence

I died saving him. In return he saved me to the biggest database in the universe. Left me like a book on a shelf. Didn't even say goodbye. He doesn't like endings.

River

Strax: The heart is a relatively simple thing.
Madame Vastra: I have not found it to be so.

The Doctor: Maybe I take up watercolors or beekeeping or something. Or, not.
Clara: So, how do we get down there? Jump?
The Doctor. Of course not. We fall.

The Doctor: When then you are a time traveler, there is one place you must never go. One place in all of time and space you must never ever find yourself.
Clara: Where?
The Doctor: You didn't listen, did you? You lot never do. That's the problem. The Doctor has a secret he will take to the grave. It's been discovered. That's not what's been found. No no no, that's not what's been found. He was talking about my grave. Trenzalore is where I'm buried.
Clara: But how can you have a grave?
The Doctor: We all do, somewhere out there in the future, the trouble with time travel is you can someday end up visiting.

Friends are lost forever more unless he goes to Trenzalore.

Whisper Men

Sorry, mam, so sorry. I think I've been murdered.

Jenny

Clara: So you were a friend?
River: A little more than a friend.

Time travel has always been possible in dreams.

Madame Vastra

I don't know where I am. It's like I'm breaking into a million different pieces and there's only one thing I remember. I have to save The Doctor. He always looks different. Sometimes, I think I'm everywhere at once, running every second, just to save him. Doctor? But he never hears me. Almost never. Having blown into this world on a leaf, I'm still blowing. I don't think I'll ever learn. I'm Clara Oswald. I'm the Impossible Girl. I was born to save The Doctor.

Clara

Doctor Who Quotes

Listen. This is just a dream. Very clever people can hear dreams, so please, just listen. I know you're afraid, but being afraid is alright, because didn't anyone ever tell you fear is a super power. Fear can make you faster, and cleverer and stronger and one day, you're going to come back to this barn and on that day, you're going to be very afraid indeed. But that's OK, because if you're very wise and very strong, fear doesn't have to make you cruel or cowardly. Fear can make you kind.

Clara

Great men are forged in fire. It is the privilege of lesser men to light the flame. Whatever the cost.

Warrior Doctor