Mr. Spock : Curious. What Chief Vanderberg said about the horta is exactly what the mother horta said to me. She found humanoid appearance revolting... but she thought she could get used to it.
Dr. McCoy : Oh, she did, did she? Now, tell me, did she happen to make any comment about those ears?
Mr. Spock : Not specifically, but I did get the distinct impression she found them the most attractive human characteristic of all. I didn't have the heart to tell her that only I have...
Captain James T. Kirk : [interrupts Spock] She really liked those ears?
Mr. Spock : Captain, the horta is a remarkably intelligent and sensitive creature... with impeccable taste.
Captain James T. Kirk : Because she approved of you?
Mr. Spock : Really, Captain, my modesty...
Captain James T. Kirk : [interrupts Spock] ... does not bear close examination, Mr. Spock. I suspect you're becoming more and more human all the time.
Mr. Spock : [surprised... a little] You... Captain, I see no reason to stand here and be insulted.
Captain James T. Kirk : [exchanges laughing glances with McCoy as Spock walks away] Ahead Warp Factor Two.
Mr. Spock : The Horta is badly wounded. It may die.
Dr. McCoy : It won't die. By golly, Jim, I'm beginning to think I can cure a rainy day.
Captain James T. Kirk : Can you help it?
Dr. McCoy : Helped it? I cured it.
Captain James T. Kirk : How?
Dr. McCoy : Well, I had the ship beam down 100 pounds of that thermal concrete. You know, the kind we use to build emergency shelters out of 'em. It's mostly silicone. So I just troweled it into the wound, and it'll act like a bandage until it heals. Take a look. It's as good as new.
Captain James T. Kirk : Well, Mr. Spock, I'm gonna have to ask you to get in touch with the Horta again. Tell her our proposition: She and her children can do all the tunneling they want, our people will remove the minerals, and each side will leave the other alone. You think she'll go for it?
Mr. Spock : It seems logical, Captain. The Horta has a very logical mind - and after close association with humans, I find that curiously refreshing.
Dr. McCoy : I'm a doctor, not a bricklayer.
Dr. McCoy : Schmitter didn't burn to death, Jim, not in the usual sense anyway.
Captain James T. Kirk : Explain that.
Dr. McCoy : Well, there are only fragments of bone and teeth left, but the plant's physician agrees with me - a chemical corrosion, almost as if he'd been thrown into a vat of extremely corrosive acid.
Captain James T. Kirk : Strong enough to eat machinery?
Dr. McCoy : Strong enough to eat anything else the way we can think of.