Chekov: There was persecution on Earth once. I remember reading about it in my history class.
Sulu: Yes, but it happened way back in the twentieth century. There's no such primitive thinking today.
Mr. Spock: [On the bridge, after Lokai and Bele have beamed to the surface of Charon] And another life form has appeared on Cheron.
Uhura: That doesn't make any sense.
Mr. Spock: To expect sense from two mentalities of such extreme view points is not logical.
Sulu: Their planet's dead. Does it matter now which one's right?
Mr. Spock: Not to Lokai and Bele. All that matters to them is their hate.
Uhura: Do you suppose that's all they ever had, sir?
Captain James T. Kirk: No, but that's all they have left. Warp factor two, Mr. Sulu. Set course for Starbase 4.
Spock: Change is the essential process of all existence
Mr. Spock: [referring to Bele and Lokai] Fascinating. Two irrevocably hostile humanoids.
Lt. Cmdr. Montgomery 'Scotty' Scott: Disgusting is what I call 'em.
Mr. Spock: That description is not scientifically accurate.
Lt. Cmdr. Montgomery 'Scotty' Scott: Mr. Spock, the word "disgusting" describes exactly what I feel about those two.
Captain James T. Kirk: That's enough for today. Those two are beginning to affect you.
Bele: It is obvious to the most simpleminded that Lokai is of an inferior breed.
Mr. Spock: The obvious visual evidence, Commissioner, is that he is of the same breed as yourself.
Bele: Are you blind, Commander Spock? Well, look at me. Look at me!
Captain James T. Kirk: You are black on one side and white on the other.
Bele: I am black on the right side!
Captain James T. Kirk: I fail to see the significant difference.
Bele: Lokai is white on the right side. All of his people are white on the right side.
Lokai: You monotone humans are all alike. First you condemn and then attack!
[Bele and Lokai are bi-colored aliens whose skin is white on one side and black on the other, except on differing sides]
Bele: You're finished, Lokai! We've got your kind penned in on Cheron into little districts, and it's no good to change. You've combed the galaxy and come up with nothing but mono-colored trash, do-gooders and bleeding hearts. You're dead, you half-white!
Lokai: [to the crew] You useless pieces of bland flesh.
Captain James T. Kirk: Computer, this is Captain James Kirk of the USS Enterprise. Destruct sequence 1: code 1-1A.
Computer voice: Voice and code 1-1A verified and correct. Sequence 1 complete.
Captain James T. Kirk: Mr. Spock?
Mr. Spock: This is Commander Spock, Science Officer. Destruct sequence number 2: code 1-1A-2B.
Computer voice: Voice and code verified and correct. Sequence 2 complete.
Captain James T. Kirk: Mr. Scott?
Lt. Cmdr. Montgomery 'Scotty' Scott: This is Lt. Commander Scott, Chief Engineering officer of the USS Enterprise. Destruct sequence number 3: code 1-B-2-B-3.
Computer voice: Voice and code 1B-2B-3 verified and correct. Destruct sequence completed and engaged. Awaiting final code for 30 second countdown.
Captain James T. Kirk: Mr. Spock, has the ship returned to the course set for it by my orders?
Mr. Spock: Negative, Captain. We are still headed directly for Cheron.
Computer voice: Destruct sequence engaged. Awaiting final code for 30 second countdown.
Captain James T. Kirk: Computer, this is Captain James Kirk of the USS Enterprise. Begin 30 second countdown. Code zero-zero-zero-destruct-zero.
Computer voice: 30 seconds... 29... 28... 27...
Captain James T. Kirk: [in Sick Bay, McCoy is examining the unconscious Lokai after the Enterprise recovers him in a stolen shuttle] Your prognosis, Doctor?
Dr. McCoy: Well, I can't give you one, Jim. I've never worked on anyone like him or any THING like him.
Mr. Spock: Yet you are pumping him full of your noxious potions as if he were a human.
Dr. McCoy: [angrily] When in doubt, the book prevails, Mr. Spock. I've run tests. Blood is blood, even when it's green like yours.
Bele: [to Lokai] You insane... you filthy little plotter of ruin. You... vicious subverter of every decent thought. Oh... you're coming back to pay for your crimes!
Captain James T. Kirk: [to Lokai] I suggest you get a great deal of rest, especially your vocal cords. It seems you'll have a double opportunity to practice your oratory on Starbase 4.
Bele: For fifty thousand of your terrestrial years, I have been pursuing Lokai through the galaxy. I have not traveled this far this long only to give him up now. This ship goes where my will drives it.
Lokai: [to Kirk] What a fool I am. Expecting help from someone like you.
Bele: [to Kirk] You can no more destroy this ship than I can change color.
Computer voice: 25 seconds.
Captain James T. Kirk: Let's see you prevent the computer from fulfilling my commands.
Computer voice: 20 seconds.
Captain James T. Kirk: From five to zero, no command in the universe can prevent the computer from fulfilling its destruct orders.
Computer voice: 15 seconds.
Captain James T. Kirk: You can use your will to drag this ship to Cheron, but I command the computer. Mine is the final command.
Computer voice: 10... 9... 8... 7... 6...
Bele: [shouts desperately] I agree!
Captain James T. Kirk: Computer, this is Captain James Kirk of the USS Enterprise. Code 1-2-3-continuity. Abort destruct order. Repeat: code 1-2-3-continuity. Abort destruct order.
Computer voice: Destruct order aborted. Destruct order aborted.
Lokai: I am not a thief.
Captain James T. Kirk: Well, certainly no ordinary thief, considering what it is you... appropriated.
Lokai: You're being very loose with your accusations and drawing conclusions without any facts.
Captain James T. Kirk: Well, I DO KNOW that you made off with a ship that didn't belong to you!
Lokai: I do not "make off" with things. My need gave me the right to use the ship. Mark the word, sir - the "use" of it.
Captain James T. Kirk: You can try those technical evasions on Starfleet Command. That's where you'll be facing your charges.
Lokai: I am grateful for your rescue.
Captain James T. Kirk: Don't mention it. We're pleased to have caught you.
Bele: Surely, stealing a shuttlecraft, uh, cannot be equalled with the importance of murdering thousands of people.
Mr. Spock: We do not know that Lokai has done that.
Bele: One thing we are agreed on is that Lokai is a criminal.
Captain James T. Kirk: No, Commissioner. The one thing we're agreed upon is that Lokai took a shuttlecraft.
Spock: Change is the essential process of all existence. For instance, the people of Cheron must have once been mono-colored.
Captain James T. Kirk: [after Bele relents, and Kirk cancels the self-destruct order] Mr. Spock, is this ship headed for Ariannus?
Mr. Spock: Negative, Captain. The Enterprise is now moving in a circular course.
Lt. Cmdr. Montgomery 'Scotty' Scott: And at Warp 10, we're going nowhere mighty fast.
Dr. McCoy: Well, however we view him, captain, he's certainly no ordinary specimen. Well, Lokai, I don't know what's normal for you exactly, but if I had your readings I would be the most incredible physical specimen of all time. We've never encountered a being like you. I'd like to know more about you and your planet.
Lokai: I'm very tired.
Captain James T. Kirk: And very evasive, or at least not fully responsive. Now then...
Lokai: I insist, I'm extremely tired, made so by your vindictive cross examinations. I will answer no more questions.
[the Enterprise is within scanning range of Cheron]
Captain James T. Kirk: What are you picking up?
Mr. Spock: Several very large cities, uninhabited. Extensive traffic systems, barren of traffic. Lower animals and vegetation encroaching on the cities. No sapient lifeforms registering at all, Captain. There is no evidence of natural disaster. yet there are vast numbers of unburied corpses in all cities.
Captain James T. Kirk: You mean, all the people are dead?
Mr. Spock: All dead, Captain. They have annihilated each other. Totally.