- Capt. Kirk: Am I interrupting something?
- Mr. Spock: Nothing but Dr. McCoy's gloating.
- Dr. McCoy: Spock, that green blood of yours may have saved you before, but this time it almost did you in. You can't deny it!
- Mr. Spock: I still prefer my physiological structure to yours.
- Capt. Kirk: Yes, gentlemen, things are back to normal.
- Capt. Kirk: It'll hurt seeing him like that.
- Dr. McCoy: I know. As much as it might seem at times that I can't stand that pointy-eared encyclopedia, I don't wanna see that happen to him.
- Dr. McCoy: What's the use of being a doctor, anyway? We're only as good as our drugs and technology make us. Underneath all the tricks, I might as well be practicing in the Middle Ages.
- Dr. McCoy: Jim, choriocytosis is a strange disease. In races with iron-based blood, it's practically nothing, but in others...
- Capt. Kirk: [interrupting] Get to the point, Bones.
- Dr. McCoy: Spock has contracted the disease. It's fatal to Vulcans.
- Orion Captain: Enterprise, we demand that you cease your pursuit immediately. I must protest as a representative of a neutral planet.
- Capt. Kirk: This is Captain Kirk. For a neutral planet, you were pretty quick to fire your phasers.
- Orion Captain: We couldn't be sure you were non-hostile.
- Capt. Kirk: Orion's neutrality has been in dispute ever since the affair regarding the Coridan planets and the Babel Conference of stardate 3850.3. Yesterday a Federation freighter was attacked in this quadrant, its cargo hijacked. As the first alien ship encountered, we require you to submit to search as per Babel Resolution A-12. Reply!
- Orion lieutenant: We can't outshoot the Enterprise and we can't outrun it, sir.
- Orion Captain: You're saying we can't escape?
- Orion lieutenant: No, sir, we can't.
- Orion Captain: Orion's official neutrality comes before this ship or its crew. We can't take Kirk's word that he won't report this incident to Starfleet.
- Orion lieutenant: The only way to avoid that is to destroy the Enterprise, and the only way to do that is to destroy ourselves, too.
- Orion Captain: Do you have a plan, Lieutenant?
- Orion lieutenant: Yes, sir. These asteroids are made of highly explosive minerals.
- Orion Captain: Can we convert the asteroid we're orbiting into a doomsday bomb that will destroy both ships?
- Orion lieutenant: Yes, sir, but...
- Orion Captain: But what?
- Orion lieutenant: Analysis of the asteroid shows that it can't be detonated by our phasers.
- Orion Captain: What will it take?
- Orion lieutenant: A powerful explosive right on the asteroid's surface. I could rig a remote control device...
- Orion Captain: No. I'll take it with me when I beam down to meet Captain Kirk. I want the satisfaction of seeing his face when I tell him he and his crew are going to die with us.
- [an explosion outside the ship]
- Lt. Arex: These asteroids are composed of a highly unstable mineral combination, sir. They explode upon impact with each other.
- Capt. Kirk: Or anything else. Keep those deflectors up, Mr. Scott.
- Scott: Captain, if the power of those rocks could be harnessed, they'd make a fantastic source of energy.
- Capt. Kirk: Also make quite a weapon.