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: Help it? I cured it.
Star Trek — Season 1: Episode 26 — “The Devil in the Dark”
Scotty: It’s a shame for a good Scotsman to admit it, but I’m not up on Milton.
Kirk: The statement Lucifer made when he fell into the pit. “It is better to rule in hell than serve in heaven.”
Spock: It would be interesting, Captain, to return to that world in a hundred years and to learn what crop has sprung from the seed you planted today.
Kirk: Yes, Mister Spock, it would indeed.
Star Trek – Season 1: Episode 24 – “Space Seed”
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.
Star Trek – Season 1: Episode 14 – “Court Martial”