The Master: A cosmos without The Doctor scarcely bears thinking about.
Fifth Doctor: A man is the sum of his memories. A Time Lord even more so.
Second Doctor: [the Second Doctor's visit of his old friend Brigadier Allister Gordon Lethgridge Stewart is drawing to a close] Now Brigadier I must bid hail and farewell. I shouldn't even be here at all. I'm not exactly breaking the laws of time but I am bending them a little.
Brigadier: [Nodding slightly] Yes. You never did care much for rules as I remember.
Tegan: You mean you're deliberately choosing to go on the run from your own people, in a rackety old TARDIS?
Fifth Doctor: Why not? After all, that's how it all started.
Fifth Doctor: [the first Doctor orders Tegan to get refreshments and she doesn't like it] Tegan! Tegan! Tegan! Humor him. I sometimes used to get a bit tetchy; fortunately one mellows with age.
[the second Doctor is peering around the office of Col.Chrichton, the Brigadiers replacement]
Second Doctor: You've had this room redecorated haven't you.
Second Doctor: Don't like it.
Brigadier: [the second Doctor and the Brigadier have only just arrived in the Zone on Gallifrey] Charming spot Doctor.
Second Doctor: [crossly] My dear Brigadier, there's no use blaming me.
Brigadier: You attract trouble Doctor. You always did.
The Master: I know this is going to be hard to believe, Doctor, but for once I mean you no harm.
Fifth Doctor: Like Alice, I try to believe three impossible things before breakfast.
Rassilon: Others have claimed inmortality throughout the ages. It was given to them as it shall be given to you. Your place is prepared Lord President Borusa.
Borusa: Oh! Oh!
[Lord Borusa looks backwards at the space Lord Rassilon has prepared for him. His face appears etched in stone. Lord Borusa's eyes twitch before turning to stone]
Rassilon: And what of you Doctors? Do you claim inmortality too?
First Doctor: No!
Second Doctor: No no!
Third Doctor: No!
Fifth Doctor: That's quite alright.
First Doctor: As it happens, I am the Doctor. The original, you might say!
Tegan: But you shouldn't be here at the same time, with him.
First Doctor: Certainly not.
Fifth Doctor: It only happens in the gravest emergencies.
First Doctor: Like now.
[the second Doctor tries to get into U.N.I.T. headquarters]
Sergeant: I'm sorry, sir, you're not allowed in there!
Second Doctor: Not allowed? Me? I'm allowed everywhere!
Second Doctor: Have faith, Brigadier. Have I ever led you astray?
Brigadier: On many occasions.
Second Doctor: Yes, well, this will be the exception.
Borusa: We are prepared to offer you a full and free pardon.
The Master: What makes you think I want your forgiveness?
Susan: Oh, Grandfather it's wonderful to see you.
[they suddenly see a dalek's shadow]
Susan: Is this place Skaro?
First Doctor: Perhaps what brought us here brought the daleks too.
[the dalek appears]
First Doctor: Run!
Dalek Voice: You are enemies of the daleks! Exterminate! EXTERMINATE!
[the Doctor triggers a trap shaped like a checkered board with coins]
First Doctor: Nothing happens until you reach the fifth row, halfway, and then the entire board becomes a death trap.
The Master: [appears from the darkness] Our ancestors had such a wonderful sense of humor.
First Doctor: Do I know you, young man?
The Master: Believe it or not, we were at the academy together.
Second Doctor: So, you're the latest model?
Fifth Doctor: Yes, and the most agreeable.
Second Doctor: Well, certainly the most impudent.
Third Doctor: And our dress code hasn't improved much, has it?
First Doctor: Neither our manners.
[about the Master]
Susan: Is this man a friend of the Doctor?
Tegan: Anything but.
Susan: But they talk as if they're friends.
Tegan: That's what worries me.
Fifth Doctor: I'm certainly not the man I was. Thank goodness.
Third Doctor: Well I've reversed the polarity of the neutron flow, so the TARDIS should be free of the force field now.
Second Doctor: We can't allow it, you know.
Third Doctor: The tomb is sealed for the best of reasons.
First Doctor: And when we get back to our own time-streams, it must be sealed again.
Second Doctor: Doctor, we need you! Join us!
First Doctor: He can't. It's some kind of mind lock. Fight it, my boy, fight it! Concentrate!
Second Doctor: We must be one!
Fifth Doctor: [the first three Doctors break Borusa's control over the Fifth Doctor] You see, Borusa? Together, we're a match for you!
Borusa: Perhaps, but you will never overcome it.
Fifth Doctor: But Chancellor Flavia will be here with her guards... or will you overcome the entire High Council?
Rassilon: [suddenly appearing as a hologram above the crypt] This is the Game of Rassilon!
Borusa: I am Borusa, Lord and President of Gallifrey.
Rassilon: Why have you come here?
Borusa: I come to claim that which is promised.
Rassilon: You seek immortality?
Rassilon: And who are these three?
Borusa: These are my servants.
Second Doctor: [angrily] We most certainly are not!
Third Doctor: Don't believe him!
Fifth Doctor: That's nonsense!
First Doctor: Don't believe them, Lord Rassilon! President Borusa speaks the truth!
Rassilon: You believe that President Borusa deserves the immortality he seeks?
First Doctor: Indeed I do.
Rassilon: He shall have it. Take the ring. Do you claim immortality, Lord Borusa? You will not turn back?