Leonard McCoy quotes from Star Trek: The Original Series

Spock

It is more rational to sacrifice one life than six.

McCoy

I'm not talking about rationality.

Spock

You might be wise to start.

McCoy

Respect is a rational process. Didn't it ever occur to you that they might react emotionally...with anger?

Spock

Doctor, I am not responsible for their unpredictability.

McCoy

They were perfectly predictable, to anyone with feeling.

Scotty

Mr. Spock, you said a while ago that there were always alternatives.

Spock

Did I? I may have been mistaken.

McCoy

Well, at least I lived long enough to hear that.

McCoy

Does your logic find this fascinating, Mr. Spock?

Spock

No. "Fascinating" is a word I use for the unexpected. In this case, I should think "interesting" would suffice.

Metron

Your captain is losing his battle. We would suggest you make whatever memorial arrangements, if any, which are customary in your culture. We believe you have very little time left.

McCoy

We appeal to you in the name of civilization. Put a stop to this!

Metron

Your violent intent and actions demonstrate that you are not civilized.

Kirk

You said you had some additional information, Mr. Spock?

Spock

I made an error in my computations.

McCoy

Oh? This could be a historic occasion.

Kirk

[about John Christopher] But in our society, he'd be useless. Archaic.

McCoy

But maybe he could be retrained, reeducated.

Kirk

Now you're sounding like Spock.

McCoy

If you're going to get nasty, I'm going to leave.

McCoy

Well, I had to see it to believe it.

Spock

Explain.

McCoy

They're about to lop off the captain's professional head, and you're playing chess with the computer.

Spock

That is true.

McCoy

Mr. Spock, you're the most cold-blooded man I've ever known.

Spock

Why, thank you, Doctor.

Where am I?

McCoy

You're in bed, holding a knife at your doctor's throat.

Answer my question!

McCoy

It would be most effective if you would cut the carotid artery, just under the left ear.

[releasing McCoy] I like a brave man.

McCoy

[taking knife from Khan] I was just trying to prevent an argument.

McCoy

Well, that's the second time man's been thrown out of paradise.

Kirk

No, no, Bones, this time we walked out on our own. Maybe we weren't meant for paradise. Maybe we were meant to fight our way through, struggle, claw our way up, scratch for every inch of the way. Maybe we can't stroll to the music of the lute. We must march to the sound of drums.

McCoy

You can't be serious. That thing is virtually made out of stone!

Kirk

Help it. Treat it.

McCoy

I'm a doctor, not a bricklayer!

Kirk

You're a healer. There's a patient. That's an order.

Spock

The Horta is badly wounded. It may die.

McCoy

It won't die. By golly, Jim, I'm beginning to think I can cure a rainy day.

Kirk

Can you help it?

McCoy

Helped it? I cured it.

Kirk

How?

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.

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?

Spock

It seems logical, Captain. The Horta has a very logical mind - and after close association with humans, I find that curiously refreshing.

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.

McCoy

Oh, she did, did she? Now tell me, did she happen to make any comment about those ears?

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—

Kirk

She really liked those ears?

Spock

Captain, the Horta is a remarkably intelligent and sensitive creature with impeccable taste.

Kirk

Because she approved of you.

Spock

Really, Captain, my modesty—

Kirk

...Does not bear close examination, Mr. Spock. I suspect you're becoming more and more human all the time.

Spock

Captain, I see no reason to stand here and be insulted.

He'll kill us all if we don't kill him first! KILL! KILL! KILL! KILL! KILL!

McCoy

He's in a lot of pain!

Kirk

Sometimes pain can drive a man harder than pleasure. I'm sure you know that, Doctor!

Spock

I admire your curiosity Doctor, but I assure you I'm all right.

McCoy

You may be controlling the pain, Mr. Spock... but you're far from all right.