Scotty: Mister Spock, you said a while ago that there were always alternatives.
Spock: Did l? I may have been mistaken.
McCoy: Well, at least I lived long enough to hear that.
Star Trek – Season 1: Episode 13 – “The Galileo Seven”
Spock: I’m happy the affair is over. A most annoying emotional episode.
McCoy: Smack right in the old heart. Oh, I’m sorry. In your case, it would be about here.
Spock: The fact that my internal arrangement differs from yours, Doctor, pleases me no end.
Star Trek – Season 1: Episode 3 – “Mudd’s Women”

Kirk: You could see the alarm lights flashing from there, McCoy. Why didn’t you tell me?
Bones: Finally finished a physical on you, didn’t I. (Kirk leaves) What am I, a doctor or a moon shuttle conductor? If I jumped every time a light came on around here, I’d end up talking to myself.
Star Trek – Season 1: Episode 2 – “The Corbomite Maneuver”