Leonard Nimoy credited as playing...
Mr. Spock
- Dr. McCoy: Jim, I think I liked him with a beard better. It gave him character. Of course almost any change would be a distinct improvement.
- Captain James T. Kirk: What worries me is the easy way his counterpart fitted into that other universe. I always thought Spock was a bit of a pirate at heart.
- Mr. Spock: Indeed, gentlemen. May I point out that I had an opportunity to observe your counterparts here quite closely. They were brutal, savage, unprincipled, uncivilized, treacherous - in every way splendid examples of homo sapiens, the very flower of humanity. I found them quite refreshing.
- Captain James T. Kirk: [to McCoy] I'm not sure, but I think we've been insulted.
- Dr. McCoy: I'm sure.
- Captain James T. Kirk: You would find me a formidable enemy.
- Mirror Spock: [Nods] I'm aware of that, Captain. I trust that you are aware of the reverse.
- Captain James T. Kirk: [about to beam back to his own universe] In every revolution there's one man with a vision.
- Mirror Spock: Captain Kirk, I shall consider it.
- Mirror Spock: Captain, I am pleased that you frustrated Mr. Chekov's plan. I should regret your death.
- Captain James T. Kirk: Why?
- Mirror Spock: I do not desire the captaincy. I much prefer my scientific duties, and I am frankly content to be a lesser target.
- Captain James T. Kirk: Logical, as always, Mr. Spock.
- Mirror Kirk: Spock, you traitorous pig, I'll hang you up by your Vulcan ears! I'll have you all executed!
- Mr. Spock: I think not. Your authority on this ship is extremely limited, Captain. The four of you will remain here in the brig and in custody until I discover how to return you to wherever it is you belong.
- Captain James T. Kirk: You heard my orders.
- Mirror Spock: They are, of course, in contradiction to standard Empire procedure. You cannot ignore the consequences.
- Captain James T. Kirk: Is that a threat?
- Mirror Spock: I do not threaten, Captain. I merely state facts. I have found you to be an excellent officer. Our missions together have been both successful and profitable; however, I shall not permit your aberrations to jeopardize my position.
- [last lines]
- Lt. Marlena Moreau: [handing over a report] Captain Kirk.
- [in background, Uhura turns and, in surprise, recognizes the Lieutenant]
- Captain James T. Kirk: Lieutenant... um... Lieutenant...?
- Lt. Marlena Moreau: Marlena Moreau. I was just assigned last week.
- Captain James T. Kirk: All right, Lieutenant. Carry on.
- Mr. Spock: You've met her before, Captain?
- Captain James T. Kirk: Uh, why do you ask?
- Mr. Spock: Your reaction: one of... recognition?
- Captain James T. Kirk: Oh, no. No, no. We haven't met before... exactly. She just seemed... a nice, likable girl. I think we could become friends. It's possible.
- Mirror Kirk: Has the whole galaxy gone crazy? What kind of a uniform is this? Where's your beard? What's going on? Where's my personal guard?
- Mr. Spock: I can answer none of your questions at this time.
- Mirror Kirk: [chuckling in amusement] All right, Spock. Whatever your game is, I'll play it. You want credits? I'll give them to you. You'll be a rich man. A command of your own? I can swing that, too.
- Mr. Spock: Apparently, some sort of transposition has taken place. I find it... extremely interesting.
- Mirror Kirk: Spock. What is it that will buy you? Power?
- Mr. Spock: [shaking it off] Fascinating.
- Mirror Spock: I shall not waste time with you. You're too inflexible, too disciplined once you're made up your mind, but Dr. McCoy has a plenitude of human weaknesses - sentimental, soft. You may not tell me what I want to know, but he will.
- Captain James T. Kirk: You're running a big risk, Spock.
- Mirror Spock: I have the phaser, Captain. And I do not intend to simply disappear as so many of your opponents have in the past.
- Mirror Spock: I shall operate the transporter. You have two minutes and ten seconds.
- Captain James T. Kirk: In that time, I have something to say. How long before the Halkan prediction of galactic revolt is realized?
- Mirror Spock: Approximately two hundred and forty years.
- Captain James T. Kirk: The inevitable outcome?
- Mirror Spock: The Empire shall be overthrown, of course.
- Captain James T. Kirk: The illogic of waste, Mr. Spock. A waste of lives, potential, resources, time. I submit to you that your Empire is illogical because it cannot endure. I submit that *you* are illogical to be a willing part of it.
- Mirror Spock: [a machine operates, and Chekov begins to scream. Kirk turns to look] The agony booth is a most effective means of discipline. I presume you've ordered full duration?
- Captain James T. Kirk: I haven't decided.
- Mirror Spock: Indeed? His act warrants death.
- Mirror Spock: I do not want to command the Enterprise, but if it should befall me, I suggest you remember that my operatives would avenge my death - and some of them... are Vulcans.
- Captain James T. Kirk: What I don't understand is how you were able to identify our counterparts so quickly.
- Mr. Spock: It was far easier for you, as civilized men, to behave like barbarians than it was for them as barbarians to behave like civilized men. I assume they returned to their Enterprise at the same time you appeared here.
- Captain James T. Kirk: Probably. However, that Jim Kirk will find a few changes, if I read my Spocks correctly.
- Captain James T. Kirk: This is a new race. They offer other things of value besides dilithium crystals.
- Mirror Spock: But it is clear that we cannot expect their cooperation. They refuse the Empire. Command procedure dictates that we provide the customary example.
- Mirror Spock: Captain, you have placed yourself in a most grave position. This conduct must be reported.
- Captain James T. Kirk: You're at liberty to do so, Mr. Spock.
- Mirror Spock: I received a private communication from Starfleet Command. I am committing a breach of regulations by informing you of its contents.
- Captain James T. Kirk: Yes, Mr. Spock.
- Mirror Spock: I am instructed to wait until planet dawn over principal target to permit you to carry out our mission.
- Captain James T. Kirk: And... if I don't?
- Mirror Spock: In that event, I am ordered to kill you and to proceed against the Halkans as the new captain of the Enterprise.
- Captain James T. Kirk: Put phasers on standby, Mr. Sulu.
- Mirror Spock: A serious breach of orders, Captain.
- Captain James T. Kirk: I have my reasons, and I'll make them clear to you... in my own good time.
- Mirror Spock: Status of mission, Captain?
- Captain James T. Kirk: No change.
- Mirror Spock: Standard procedure, Captain?
- [Kirk nods]
- Mirror Spock: [contacting the bridge] Mr. Sulu, you will program phaser barrage on Halkan cities.
- Mirror Sulu: Yes, Mr. Spock.
- Mirror Spock: Their military capability, Captain?
- Captain James T. Kirk: None.
- Mirror Spock: Regrettable that this society has chosen suicide.