No, no, no, dear boy. All this is a spaceship!
A spaceship?
Yes, exactly!
Hey, Doctor? If this is a spaceship what are they?
A group of Monoids appear and circle them]
S3 E6The Ark
Well, you did come, my dear, so it's too late to be worry about that. And stop snivelling!
I'm not snivelling. It's me nose running again! Anyway, I'm feeling better now but I don't suppose anyone cares.
But of course they care, my dear. Now don't worry. It's not your fault at all. If it's anybody's, it's mine.
Look, do you think this has happened before? That we've carried an infection from one age to another, or even one planet to another?
Oh, I don't want to think it about it, dear boy. It's too horrifying. Though I must say that we're usually very healthy.
It'll spread through the whole ship, become an epidemic.
Well, that depends on the strength of the virus infection.
If it's half as bad as my cold was, it will.
Oh, do blow your nose, child. It's running all over the place.
No, it isn't. I'm crying this time.
[the Doctor sneezes and as he does so he slowly fades away. Steven and Dodo don't notice right away because they are facing each other]
Bless you.
Oh, Doctor, don't say you're catching a cold now.
[Now Steven and Dodo turn toward the Doctor and discover that he's disappeared] Doctor? Well, where are you?
[the Doctor briefly fades in and out of sight but then completely disappears] What do you mean, dear boy? I'm still here, hmm?
Huh?
Doctor, you've vanished!
What? Oh, nonsense, child! Nonsense! Hmm!
You have! Do you think this is something to do with the Refusians?
Why... it must be!
You're wrong! This is something far more serious. We're in grave danger. This is some form of attack!
S3 E7The Celestial Toymaker
I'm bored. I love to play games but there's no-one to play against. The beings who call here have no minds, and so they become my toys. But you will become my perpetual opponent. We shall play endless games together, your brain against mine.
Your infantile behaviour... Is beyond a joke.
[The Doctor reaches down to put counter 1 on top of counter 2, to complete his trilogic game. But then hesitates]
... No, of course I mustn't. You very nearly caught me then, hmmm.
Make your next move, Doctor. Make your move.
But if I do, this place vanishes, hmmm?
... And then you have won completely...
... And if this place vanishes, then the TARDIS, and the rest of us, will vanish also.
Correct. That is the price of success. Make your last move, Doctor. Make your last move.
[The Doctor puts his hands on his lapels]
(to Sgt. Rugg and Ms. Wiggs) You fail me again, and I'll smash you like a stack of plates! (to make himself clear, the Toymaker picks up the only non-smashed plate and smashes it)
S3 E8The Gunfighters
I never touch alcohol.
HHolliday
[taking a swig] Well I do.
KKate
Aw for Pete's sake, Doc, tell 'em you're Holliday! You can take on all four of 'em any time.
Yes, I'm sorry, gentleman, but this is Holliday's young girlfriend, and she's only lying to protect him. Now, as I've already told you about this gun.
[Seth's revolver is shot from his hand and he clutches his wrist in pain. Nobody is more surprised than the Doctor who was merely waving the gun by way of explanation. But Kate is quick to take advantage of the confusion and produces her own weapon.]
KKate
Okay, don't try it, fellas. Nice shooting, Doc, but ya should have got him between the eyes.
Between the who?
KKate
The eyes.
Oh, my dear young lady, I, I, I, I...
KKate
Kill the next one that moves.
Yes, yes, quite so, quite so. Very good idea. Excellent. Well, you heard. Steven, get their guns!
[Steven is being forced to play a tune on the piano]
Let's hope the piano knows it.
He gave me a gun, he extracted my tooth. What more do you want?
HHolliday
I promised to take you back safe home and I will do so in my own good time.
[Dodo grabs a gun from the dressing table and aims it unsteadily.]
We're leaving now.
HHolliday
What're you attempting to do with that there offensive weapon?
Shoot you if I have to.
[She cocks the gun.]
S3 E9The Savages
JJano
Do you not realize that all progress is based on exploitation?
That, sir, is protracted murder!
S3 E10The War Machines
[The Doctor and Dodo looking up at the newly completed Post Office Tower in London]: You know there's something alien about that tower! I can sense it.
Smells okay to me. Good old London smoke...
I can feel it's got something sort of powerful. It's... Look at my skin. Look at that. I've got that pricking sensation again, the same. Just as I had when I saw the Daleks, those Daleks were near...
"Daleks"? Who are they?
Oh, er, yes, of course, you, er, you didn't meet them, did you, child? No. No, and I pray that you never will.
[A War Machine raises it's large arm to crush the Doctor]:
Ah, temper, temper!
[Miraculously, the Machine stops]
S4 E1The Smugglers
The distractions... I really thought I was going to be alone again.
These quotes come from Wikiquote's Doctor Who pages and are available under the Creative Commons Attribution-ShareAlike License.