This is you, Clara. Everything you were or will be. Take it. You blew into life on this leaf. Hold tight. It will take you home.

I don't know where I am. I don't know where I'm going or where I've been. I was born to save The Doctor, but The Doctor is safe now. I'm the Impossible Girl, and my story is done.

Clara

River: How are you even doing that? I'm not really here.
The Doctor: You're always here to me. And I always listen. And I can always see you.
River: Then why didn't you speak to me?
The Doctor: Because I thought it would hurt too much.
River: I believe I could have coped.
The Doctor: No, I thought it would hurt me. And I was right. {Kisses} Since nobody else in this room can see you, God knows how that looked.

You can't go in there. It will kill you for God's sake.

River

In fact, you know what? Run. Run you clever boy, and remember me.

Clara

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.

Doctor Who Season 7 Episode 14 Quotes

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