Leonard Nimoy credited as playing...
Mr. Spock
- Spock: Doctor, ship's temperature is increasingly uncomfortable for me. I've adjusted the environment in my quarters to 125 degrees, which is at least tolerable. However, I...
- McCoy: Well, I see I'm not gonna be making any house calls on YOU!
- Spock: I wondered if perhaps there was something which could lower my sensitivity to cold.
- McCoy: I'm not a magician, Spock, just an old country doctor.
- Spock: Yes. As I always suspected.
- Commodore Stocker: I would like you to take over command of the Enterprise.
- Spock: On what grounds, Commodore?
- Commodore Stocker: On the grounds that the captain, because of his affliction, is not able to perform his duties.
- Spock: Need I remind you, sir, that I, too, have contracted the same affliction?
- Commodore Stocker: Yes, but you're a Vulcan. You've a much greater lifespan. You show the effects to a much smaller degree.
- Spock: I'm half-human, sir. My physical reflexes are down. My mental capacity is reduced. I tire easily. No, sir. I am not fit for command.
- Commodore Stocker: Well, if you are not, with your Vulcan physique, then obviously Captain Kirk can not be.
- McCoy: Anytime you're ready, Mr. Spock.
- Spock: I am quite ready now, Doctor.
- McCoy: Because of your Vulcan physique, I've prepared an extremely potent shot for you. However, I thought you'd might like to know that I've removed all the breakables from sickbay.
- Spock: That is very considerate of you, Doctor.
- Spock: Doctor, we made the necessary computations and produced this serum. It is crude, and dangerous, but we had no time for refinements.
- McCoy: All right! Let's... let's go!
- Spock: It could cure - or kill, Doctor.
- McCoy: Don't give me any Vulcan details, Spock. Just give me the shot!
- Captain James T. Kirk: No... *I'll* take the first shot.
- McCoy: [to Spock] Oh, you're perfectly healthy.
- Spock: I must differ with you, Doctor. I'm having difficulty concentrating, which is most disturbing, my eye sight appears to be failing, and the normal temperature of the ship seems to me to be increasingly colder.
- McCoy: I did not say you weren't affected, Mr. Spock. You are perfectly healthy. That is, for any normal Vulcan on the high side of 100.
- Spock: Based on what Dr. McCoy gave me, I estimate that physically we each have less than a week to live. Also, since our mental faculties are aging faster than our bodies, we'll be little better than mental vegetables in a considerably lesser time.
- Captain James T. Kirk: Oh, Mr. Sulu, increase orbit to 20,000 mile perigee.
- Sulu: You mean, ANOTHER 20,000, Captain?
- Captain James T. Kirk: I fail to understand why each one of my commands is being questioned. Now do as you're told, Mr. Sulu.
- Spock: Mr. Sulu, what is our present position?
- Sulu: Orbiting at 20,000, sir.