- Spock: I fail to comprehend your indignation, sir. I have simply made the logical deduction that you are a liar.
- Capt. Kirk: You'll be trapped inside that corridor with him forever. At each other's throats throughout time.
- Lazarus: Is it such a large price to pay for the safety of two universes?
- Capt. Kirk: So you're the terrible thing? The murdering monster? The creature?
- Lazarus: Yes, Captain. Or he is. It depends on your point of view, doesn't it?
- Assistant Engineer: Hi.
- Charlene Masters: Hi. Coffee?
- Assistant Engineer: Is that an order, Lieutenant?
- Dr. McCoy: He's in a lot of pain!
- Capt. Kirk: Sometimes pain can drive a man harder than pleasure. I'm sure you know that, Doctor!
- Capt. Kirk: Fact: You said you needed the crystals. Fact: An hour after you said you "must have them", they were missing! Fact: Two of my crewman were attacked.
- Spock: Jim, madness has no purpose, or reason, but it may have a goal. He must be stopped, held, destroyed if necessary.
- Lazarus: Is something wrong?
- Capt. Kirk: No. I have a ship's physician with a strange sense of humor.
- Transporter Chief: Sir, you shouldn't be in here.
- Lazarus: Oh, I didn't know!
- [hits him in the stomach]
- Dr. McCoy: Well, as you know, we both brought Lazarus in here and I treated a deep abrasion on his forehead, right?
- Capt. Kirk: Right.
- Dr. McCoy: And then I bandaged it, I stepped into this room for just a moment...
- Capt. Kirk: Bones, I have a lot of things to do. Get to the point.
- Dr. McCoy: Well, say he's got the constitution of a dinosaur, recuperative powers, ditto.
- Capt. Kirk: Mm-hm.
- Dr. McCoy: And, as we both know, I'm a bright young medic with a miraculous touch.
- Capt. Kirk: Mm-hm.
- Dr. McCoy: Well, why, then, when I returned, there wasn't a trace of that wound on his forehead? Not even a bruise. It was like he had never been injured.
- Charlene Masters: Report on the Dilithium crystals, Captain.
- Capt. Kirk: Yes?
- Charlene Masters: Whatever that phenomenon was, it drained almost all of our crystals completely. It could mean trouble.
- Capt. Kirk: You have a talent for understatement, Lieutenant. Without full crystal power, our orbit will begin to decay in ten hours. Re-amplify immediately.
- Charlene Masters: Aye aye, sir.
- Capt. Kirk: About four more orbits ought to do it, Mr. Leslie. That'll wrap it up. Lay in a course for Starbase 200.
- Lesley: Aye aye, sir.