Leonard McCoy quotes from Star Trek: The Original Series

McCoy

[After asking Crater to open his month] The machine is capable of almost anything, but I'll still put my trust in a healthy set of tonsils.

McCoy

We all have our darker side. We need it; it's half of what we are. It's not really ugly, it's human.

McCoy

[calling after Kirk as the latter leaves sick bay] Had to finish the physical on you, didn't I? What am I, a doctor or a moon shuttle conductor? [then, alone in the room] If I jumped every time a light came on around here, I'd end up talkin' to myself.

McCoy

Blast medicine anyway. We've learned to tie into every human organ in the body except one -- the brain. The brain is what life is all about. That man can think any thought that we can, and love, hope, dream as much as we can, but he can't reach out, and no one can reach in.

McCoy

[Khan has grabbed McCoy by throat and is holding a knife on him] Well, either choke me or cut my throat. Make up your mind.

McCoy

He's dead, Jim.

McCoy

What Maab has said is true. Our customs are different. What the Klingon has said is unimportant, and we do not hear his words. [Aside, to Kirk] I just called the Klingon a liar.

McCoy

I'll bet he [Spock] left a bad taste in the creature's mouth, too.

McCoy

The Vulcans worship peace above all, Henoch.

McCoy

The infection resembles one developed by Earth during their bacteriological warfare experiments in the 1990s. Hard to believe we were once foolish enough to play around with that.

McCoy

Spock, I've found that evil usually triumphs...unless good is very, very careful.

McCoy

We're all sorry for the other guy when he loses his job to a machine. But when it comes to your job -- that's different. And it always will be different.

McCoy

Compassion: that's the one things no machine ever had. Maybe it's the one thing that keeps men ahead of them.

McCoy

[to Spock] I'm trying to thank you, you pointy-eared hobgoblin!

McCoy

Do you know why you're not afraid to die, Spock? You're more afraid of living. Each day you stay alive is just one more day you might slip and let your human half peek out. That's it, isn't it? Insecurity. Why, you wouldn't know what to do with a genuine, warm, decent feeling.