“The way I see it, every life is a pile of good things and bad things. The good things don’t always soften the bad things, but vice versa, the bad things don’t always spoil the good things or make them unimportant.”

“Because every time you see them happy you remember how sad they’re going to be. And it breaks your heart. Because what’s the point in them being happy if they’re going to be sad later? The answer is, of course, because they are going to be sad later.”

“Every great decision creates ripples, like a huge boulder dropped in a lake. The ripples merge and rebound off the banks in unforeseeable ways. The heavier the decision, the larger the waves, the more uncertain the consequences.”

“There are some corners of the universe which have bred the most terrible things. They must be fought.”

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.

“There are worlds out there where the sky is burning, where the sea's asleep, and the rivers dream. People made of smoke, and cities made of song. Somewhere there's danger, somewhere there's injustice, and somewhere else the tea's getting cold. Come on, Ace, we've got work to do!”

ACE: We did good, didn't we?

DOCTOR: Perhaps. Time will tell. It always does.

KLIEG: Yes, yes, I can see that, but how did you know in the first place?

DOCTOR: Oh, I use my own special technique.

KLIEG: Oh really, Doctor? And may we know what that is?

DOCTOR: Keeping my eyes open and my mouth shut.

DAVROS: The Daleks shall become Lords of Time! We shall become all-

DOCTOR: - Powerful. Crush the lesser races. Conquer the galaxy. Unimaginable power. Unlimited rice pudding, et cetera, et cetera.

“Oh, my giddy aunt.”

KOVARIAN: The anger of a good man is not a problem. Good men have too many rules.

DOCTOR: Good men don't need rules. Today is not the day to find out why I have so many.

“Change, my dear. And it seems not a moment too soon.”

“We all change, when you think about it. We're all different people all through our lives. And that's okay, that's good, you've got to keep moving, so long as you remember all the people that you used to be. I will not forget one line of this. Not one day. I swear. I will always remember when the Doctor was me.”

DOCTOR: I walked away from the last Great Time War. I marked the passing of the Time Lords.

I saw the birth of the universe and I watched as time ran out, moment by moment, until nothing remained.

No time. No space. Just me.

I walked in universes where the laws of physics were devised by the mind of a mad man.

I've watched universes freeze and creations burn. I've seen things you wouldn't believe. I have lost things you will never understand.

And I know things. Secrets that must never be told. Knowledge that must never be spoken. Knowledge that will make parasite gods blaze.

So come on, then. Take it! Take it all, baby! Have it! You have it all!

STRAX: Colonel Manton, you will give the order for your men to withdraw.

DOCTOR: No. Colonel Manton, I want you to tell your men to run away.

MANTON: You what?

DOCTOR: Those words. Run away. I want you to be famous for those exact words. I want people to call you Colonel Run Away. I want children laughing outside your door, because they've found the house of Colonel Run Away. And, when people come to you, and ask if trying to get to me through the people I love is in any way a good idea, I want you to tell them your name. Oh, look, I'm angry. That's new. I'm really not sure what's going to happen now.

DOCTOR: Goodbye, Zoe.

ZOE: Goodbye, Doctor. Will we ever meet again?

DOCTOR: Again? Now, Zoe, you and I know, time is relative, isn't it?

ACE: Don't you have things you hate?

DOCTOR: I can't stand burnt toast. I loathe bus stations. Terrible places. Full of lost luggage and lost souls.

ACE: I told you I never wanted to come back here again.

DOCTOR: And then, there's unrequited love, and tyranny, and cruelty.

ACE: Too right.

DOCTOR: We all have a universe of our own terrors to face.

ACE: I face mine on my own terms.

BRIGADIER: How nice to see you again, Doctor.

DOCTOR: It's Colonel Lethbridge-Stewart!

BRIGADIER: Ah, Brigadier now. I've gone on up in the world.

JAMIE: Oh course, the Yetis.

DOCTOR: Goodbye, Jamie.

JAMIE: I won't forget you, you know.

DOCTOR: I won't forget you. Don't go blundering into too much trouble, will you?

JAMIE: Oh, you're a fine one to talk.

“Whatever else happens, I am the Doctor, whether you like it or not.”

“In all my travellings throughout the universe I have battled against evil, against power-mad conspirators. I should have stayed here. The oldest civilisation, decadent, degenerate and rotten to the core. Ha! Power-mad conspirators, Daleks, Sontarans, Cybermen, they're still in the nursery compared to us. Ten million years of absolute power, that's what it takes to be really corrupt.”

JO: I only left you because I got married. Did you think I was stupid?

DOCTOR: Why do you say that?

JO: I was a bit dumb. Still am, I suppose.

DOCTOR: Now what in the world would make you think that, ever, ever, ever?

JO: We'd been travelling down the Amazon for months, and we reached a village in Cristalino, and it was the only place in thousands of miles that had a telephone, so I called you. I just wanted to say hello. And they told me that you'd left, left UNIT, never came back. So I waited and waited, because you said you'd see me again. You did, I asked you and you said yes. You promised. So I thought, one day, I'd hear that sound, Deep in the jungle, I'd hear that funny wheezing noise, and a big blue box right in the middle of the rainforest. You see, he wouldn't just leave. Not forever. Not me. I've waited my whole silly life.

DOCTOR: But you're an idiot.

JO: Well, there we have it.

DOCTOR: No, but don't you see? How could I ever find you? You've spent the past forty years living in huts, climbing up trees, tearing down barricades. You've done everything from flying kites on Kilimanjaro to sailing down the Yangtze in a tea chest. Not even the TARDIS could pin you down.

JO: Hold on. I did sail down the Yangtze in a tea chest. How did you know?

DOCTOR: And that family. All seven kids, twelve grandchildren, thirteenth on his way. He's dyslexic but that'll be fine. Great swimmer.

JO: So you've been watching me all this time?

DOCTOR: No. Because you're right, I don't look back. I can't. But the last time I was dying, I looked back on all of you. Every single one. And I was so proud.

JO: It really is you, isn't it?

DOCTOR: Hello.