DOCTOR: I know there aren’t many certainties in any of our lives, but Umbreen, Prem, what I see you in you is the certainty you have in each other. Something I believe in my faith. Love, in all its forms, is the most powerful weapon we have, because love is a form of hope and, like hope, love abides in the face of everything. You both found love with each other. You believed in it, you fought for it, and you waited for it. And now, you’re committing to it. Which makes you, right now, the two strongest people on this planet.

DOCTOR: I'm the Doctor.

MABLI: A doctor of medicine?

DOCTOR: Well, medicine, science, engineering, candyfloss, LEGO, philosophy, music, problems, people, hope. Mostly hope.

DOCTOR: Never be cruel. Never be cowardly. Hate is always foolish. Love is always wise. Always try to be nice, but never fail to be kind.

DOCTOR: Without hope. Without witness. Without reward.

FIRST DOCTOR: The Doctor? No, I don't think so! No, dear me, no! You may be a Doctor, but I am the Doctor. The original, you might say!

DOCTOR: Who I am is where I stand. Where I stand is where I fall.

DOCTOR: Winning? Is that what you think it's about? I'm not trying to win. I'm not doing this because I want to beat someone, or because I hate someone, or because, because I want to blame someone. It's not because it's fun and God knows it's not because it's easy. It's not even because it works, because it hardly ever does. I do what I do, because it's right! Because it's decent! And above all, it's kind. It's just that. Just kind. If I run away today, good people will die. If I stand and fight, some of them might live. Maybe not many, maybe not for long. Hey, you know, maybe there's no point in any of this at all, but it's the best I can do, so I'm going to do it. And I will stand here doing it till it kills me. You're going to die too, some day. How will that be? Have you thought about it? What would you die for? Who I am is where I stand. Where I stand, is where I fall. Stand with me. These people are terrified. Maybe we can help, a little. Why not, just at the end, just be kind?

BILL: So, the Time Lords, bit flexible on the whole man-woman thing, then, yeah?

DOCTOR: We're the most civilised civilisation in the universe. We're billions of years beyond your petty human obsession with gender and its associated stereotypes.

BILL: But you still call yourselves Time Lords?

DOCTOR: Yeah. Shut up.

DOCTOR: Nothing’s sad until it’s over, and then everything is.

CURATOR: Oh, it's entirely up to you. Your choice, eh? I can only tell you what I would do if I were you. Oh, if I were you. Oh, perhaps I was you, of course. Or perhaps you are me. Congratulations.

ELEVENTH DOCTOR: Thank you very much.

CURATOR: Or perhaps it doesn't matter either way. Who knows, eh? Who knows?

ROMANA: How did you know?

DOCTOR: Oh, knowing's easy. Everyone does that ad nauseam. I just sort of hope.

DOCTOR: First things first?

ROMANA: Exactly.

DOCTOR: But not necessarily in that order.

DOCTOR: I say, what a wonderful butler. He's so violent.

DOCTOR: Would you mind not standing on my chest? My hat's on fire.

DOCTOR: Sometimes my brilliance astonishes even me.

DOCTOR: A straight line may be the shortest distance between two points, but it is by no means the most interesting.

DOCTOR: You, Sir, are a NITWIT!

DOCTOR: I hate computers and refuse to be bullied by them!

DOCTOR: You look very nice in that dress, Victoria.

VICTORIA: Thank you. Don't you think it's a bit--

DOCTOR: A bit short? Oh, I shouldn't worry about that. Look at Jamie's.

DOCTOR: You know, I am so constantly outwitting the opposition, I tend to forget the delights and satisfaction of the arts, the gentle art of fisticuffs.

DOCTOR: One day, I shall come back — yes, I shall come back. Until then, there must be no regrets, no tears, no anxieties. Just go forward in all your beliefs, and prove to me that I am not mistaken in mine. Goodbye, Susan, goodbye, my dear.

DOCTOR: I don’t make threats, but I do keep promises.

DOCTOR: You wanted advice you said. I never give it, never. But I might just say this to you. Always search for truth. My truth is in the stars and yours is here.

DOCTOR: Fear makes companions of all of us.