- Spock: Frankly, I was rather dismayed by your use of the term "half-breed", captain. You must admit it is an unsophisticated expression.
- Capt. Kirk: I'll remember that, Mr Spock, the next time I find myself in a similar situation.
- Kirk Android: Nurse, if I gave you a direct order to betray him...
- Christine Chapel: Please, don't ask me to make that choice. I'd much rather you pushed me off the same precipice where Matthews died.
- Christine Chapel: [pushes away her plate] I can't... Please, go ahead and eat.
- Kirk Android: Androids don't eat, Miss Chapel.
- Kirk Android: Mind your own business, Mr. Spock, I'm sick of your half-breed interference. Do you hear?
- Mr. Spock: Yes, very well, Captain.
- Kirk Android: You look upset, Mr. Spock. Is everything all right up here?
- Mr. Spock: No problems here, sir.
- Brown: [showing no emotion after a man has plummeted to his death] Unfortunate. Terribly unfortunate.
- Dr. Roger Korby: Christine, you must realise an android is like a computer. It does only what I program. As a trained scientist yourself, you must realise...
- Christine Chapel: That given a mechanical Dr. Brown, a mechanical geisha would be no more difficult?
- Dr. Roger Korby: You think I could love a machine?
- Christine Chapel: Did you?
- Dr. Roger Korby: Andrea is incapable of that. She simply obeys orders.
- Dr. Roger Korby: Do you realize the number of discoveries lost because of superstition, of ignorance, a layman's inability to comprehend?
- Captain James T. Kirk: [referring to Ruk] He's an android? Like Brown?
- Ruk: More complex than Brown. Much superior. I was left here by the Old Ones.
- Dr. Roger Korby: Ruk was still tending the machinery when we arrived here. How many centuries?
- [Ruk remains silent]
- Dr. Roger Korby: Even Ruk doesn't know. With his help, with the records I could find, we built Brown.
- Captain James T. Kirk: You've convinced me, Doctor. You've convinced me that you are dangerous.
- [pushes over a table and makes a run for it]
- Dr. Roger Korby: Can you imagine how life could be improved if we could do away with jealousy, greed, hate?
- Captain James T. Kirk: It can also be improved by eliminating love, tenderness, sentiment. The other side of the coin, Doctor.
- Andrea: I will kiss you.
- Kirk Android: No.
- Andrea: You... you will not?
- Kirk Android: It is illogical.
- [She shoots him]
- Mr. Spock: Captain, we finished ahead of schedule.
- Kirk Android: Dr. Korby has considerable cargo to beam aboard. I'll have to go over our destination scheduled with him.
- Mr. Spock: You're going back down with the command packet?
- Kirk Android: Mind your own business, Mr. Spock. I'm sick of your half-breed interference, do you hear?
- Mr. Spock: [surprised] Yes, very well, Captain.
- Kirk Android: You look upset, Mr. Spock. Is everything all right up here?
- Mr. Spock: No problems here, Sir.
- Kirk Android: Good. I'll beam up shortly with Dr. Korby and party.
- Mr. Spock: [Kirk leaves, Spock is suspicious] Security, Spock here. Status of the landing party?
- Security: Ready and standing by, Sir.
- Mr. Spock: Have them meet me in the transporter room after the Captain has beamed down.
- Christine Chapel: Roger, what's happened to you? When I sat in your class you wouldn't even dream of harming an insect or an animal. Their life was sacred to you then.
- Andrea: I'm like Dr. Brown - an android. Didn't you know?
- Dr. Roger Korby: Remarkable, isn't she? Notice the lifelike pigmentation, the variations in skin tones. The flesh - the flesh has warmth. There's even a pulse. Physical sensation.
- Christine Chapel: [sarcastically] How convenient.
- Dr. Roger Korby: Christine, you must realize an android is like a computer. It does only what I program. As a trained scientist yourself, you must realize...
- Christine Chapel: That given a mechanical Dr. Brown, a mechanical geisha would be no more difficult.
- Dr. Roger Korby: You think I could love a machine?
- Christine Chapel: Did you?
- Dr. Roger Korby: Andrea's incapable of that.
- Mr. Spock: You're certain you recognise his voice?
- Christine Chapel: Have you ever been engaged, Mr. Spock?
- Captain James T. Kirk: Well, there's one difference between us: I'm hungry.
- Kirk Android: The difference is your weakness, Captain, not mine.
- Dr. Roger Korby: One at a time, gentlemen. Captain?
- Captain James T. Kirk: Eating is a pleasure, sir. Unfortunately one you will never know.
- Kirk Android: Perhaps. But I will never starve, sir.
- Captain James T. Kirk: Agreed, Doctor. However, there will be two of us.
- Christine Chapel: Hello, Roger.
- Dr. Roger Korby: [over intercom] Christine?
- Christine Chapel: Yes, Roger.
- Dr. Roger Korby: Darling, how - where are you? Yes, yes, by all means, Captain. I - I had no idea, no hope. Darling, are you all right?
- Christine Chapel: Yes, Roger. Everything's all right now.
- Captain James T. Kirk: We're on our way, Doctor. We'll be with you in a moment. Enterprise out.
- Andrea: I do not understand. Why are you unhappy? You are with Roger again.
- Christine Chapel: Where is Captain Kirk?
- Andrea: You are concerned about the Captain?
- Christine Chapel: Yes, I am concerned.
- Andrea: How can you love Roger without trusting him? Why does it bother you when I use the name Roger?
- Dr. Roger Korby: Andrea, it's sufficient that it does disturb her. You will call me Dr. Korby from now on, Andrea.
- Andrea: Yes, Dr. Korby.
- Dr. Roger Korby: I need time to explain and demonstrate to him and you. Shall we start with Andrea?
- Christine Chapel: Yes, let's start with Andrea.
- Dr. Roger Korby: Christine, Christine, let me prove myself. Does this make such a difference?
- Christine Chapel: [voice breaking] Don't you see, Roger? Everything you've done has proved it isn't you.
- Dr. Roger Korby: I am Roger Korby!
- Captain James T. Kirk: Then prove it. Give me that phaser gun. If there's any human left in you, give it to me.
- Dr. Roger Korby: You might as well try to outthink a calculating machine.
- Captain James T. Kirk: Obviously I can't.
- Christine Chapel: I know he's alive down there, Captain.
- Captain James T. Kirk: It's been five years since his last message.
- Christine Chapel: Roger's a very determined man. He'd find a way to live.
- Dr. Roger Korby: It's still me, Christine. Roger. I'm in here. You can't imagine how it was. I was frozen, dying. My legs were gone. I was... I had only my brain between life and death. This can be repaired, easier than another man can set a broken finger. I'm still the same as I was before, Christine, perhaps even better.
- Christine Chapel: Are you, Roger?
- Captain James T. Kirk: Something bothering you, Mr. Spock?
- Mr. Spock: Frankly, I was rather dismayed by your use of the term, "half-breed," Captain. You must admit, it is an unsophisticated expression.
- Captain James T. Kirk: I'll remember that, Mr. Spock, the next time I find myself in a similar situation.
- Ruk: You brought him among us! You brought the inferior ones! We had cleansed ourselves of them. Now you bring the evil back.
- Christine Chapel: Captain...
- Captain James T. Kirk: I know, I know. I'd hate to be torn between commander and fiancée myself.
- Christine Chapel: No, I'm not torn. I'm puzzled. I'm worried.
- Captain James T. Kirk: Has he confided in you?
- Christine Chapel: No, nothing he hasn't told you. I know it doesn't make sense. What he's done may seem wrong, but he is Roger Korby, whatever he seems to be doing.
- Captain James T. Kirk: Unless something's gone wrong with his mind.
- Christine Chapel: No. You're forgetting how well I know him. He's as sane as you or I.
- [first lines]
- crew member 1: [over PA] All sections, security check in progress. Report.
- crew member 2: Forward phaser, affirmative.
- Captain James T. Kirk: We're entering standard orbit, nurse.