William Shatner credited as playing...
Captain James T. Kirk
- Captain James T. Kirk: [to Spock] You traitorous... disloyal... you stab me in the back the first chance you get. Spock... get out. I never want to have to look at you again.
- Captain James T. Kirk: Maintain standard orbit, Mr. Sulu.
- Sulu: You already gave that order, sir.
- Captain James T. Kirk: Oh? Well... FOLLOW it.
- McCoy: [checking out the Captain's twinge] Jim, I think we'd better run a complete physical on you.
- Captain James T. Kirk: Why? Just muscular strain, hmm?
- McCoy: No, Jim. It's advanced arthritis. It's spreading.
- 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.
- Captain James T. Kirk: [after his competency hearing has been concluded and he's back in his quarters] I made a fool of myself in there. I shouldn't have let them confuse me... rattle me.
- Janet Wallace: [trying to be sympathetic] Everybody understood.
- Captain James T. Kirk: But I am not *old*, Jan. I'm NOT.
- [begins wheezing]
- Captain James T. Kirk: A few muscular aches doesn't make a man old. And you don't run a starship with your arms, you run it with your head! And my brain's as sharp as it ever was. A simple case of radiation poisoning and they relieve me of my command?
- Captain James T. Kirk: [stops to look at himself in a mirror] I admit I'm getting a little gray, but radiation will do that to ya'.
- 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.