Amanda Grayson: What's the matter Spock
Spock: I do not understand the question, mother.
Amanda Grayson: You're half human Spock; the computer knows that.
Spock: The question is irrelevant.
Amanda Grayson: Spock, the retraining of your mind has been in the Vulcan way, so you may not be aware of your human feelings, but as my son, you have them, they will surface.
Spock: As you wish, since you deem them of value, however, I cannot find my answers here.
Amanda Grayson: Where must you go?
Spock: To earth, to offer testimony.
Amanda Grayson: You do this for friendship?
Spock: I do it because I was there.
Amanda Grayson: Spock, does the good of the many outweigh the good of the one?
Spock: That would be a logical argument.
Amanda Grayson: Then you stand here alive because of a mistake made by your flawed, feeling, human friends. They have sacrificed their futures because they felt that the good of the one, you, was more important.
Spock: Humans make illogical decisions.
Amanda Grayson: (Proudly) They do, indeed.

Dr. Gillian Taylor: Don't tell me they don't use money in the 23rd Century.
James T. Kirk: Well, we don't.

Dr. Gillian Taylor: Don't tell me, you're from outer space.
James T. Kirk: No, I'm from Iowa. I only work in outer space.

Dr. Gillian Taylor: You guys like Italian?
Spock: No.
James T. Kirk: Yes.
Spock: No.
James T. Kirk: Yes.
Spock: No.
James T. Kirk: Yes. I love Italian. [looks at Spock] And so do you.
Spock: Yes.

Dr. Nichols: what did you have in mind?
Leonard McCoy: Perhaps the professor can use your computer?
Montgomery Scott: Computer. Computer. Ah. [McCoy hands him a mouse and he speaks over it] Hello, computer.
Dr. Nichols: Just use the keyboard.
Montgomery Scott: The keyboard. How quaint.

Hikaru Sulu: Helm ready, Captain.
James T. Kirk: All right, Mr. Sulu. Let's see what she's got. [last lines]

James T. Kirk: Everybody remember where we parked.

James T. Kirk: If we play our cards right, we may be able to find out where those whales are being released.
Spock: How will playing cards help?

James T. Kirk: Mr. Spock, have you accounted for the variable mass of whales and water in your time re-entry program?
Spock: Mr. Scott cannot give me exact figures, Admiral, so... I will make a guess.
James T. Kirk: A guess? You, Spock? That's extraordinary.
Spock: [to McCoy] I don't think he understands.
Leonard McCoy: No, Spock. He means that he feels safer about your guesses than most other people's facts.
Spock: Then you're saying... it is a compliment?
Leonard McCoy: It is.
Spock: Ah. Then I will try to make the best guess I can.

James T. Kirk: Scotty, beam me up. [This is the actual line uttered. See List of misquotations or Star Trek: The Original Series.]

James T. Kirk: Spock, where the hell is the power you promised me?
Spock: One damn minute, Admiral.
Montgomery Scott: [over the intercom] I'm ready, Spock. Let's find George and Gracie.

Leonard McCoy: "Angels and ministers of grace, defend us."
Spock: Hamlet, act I, scene IV.

Montgomery Scott: Admiral, there be whales here!
James T. Kirk: Well done, Mr. Scott. How soon can we be ready for warp speed?
Montgomery Scott: Full power now, sir.
James T. Kirk: If you will, Mr. Sulu.
Hikaru Sulu: Aye, sir. Warp speed.

Montgomery Scott: You planning to take a swim?
Leonard McCoy: Off the deep end, Mr. Scott.
James T. Kirk: We've got to find some humpbacks.
Montgomery Scott: Humpbacked people?
James T. Kirk: Whales, Mr. Scott. Whales. About 45 to 50 feet long. About 40 tons each.

Pavel Chekov: Admiral, we have found the nuclear wessel.
James T. Kirk: Well done, team two.
Pavel Chekov: And, Admiral... it is the Enterprise.
[Kirk and Spock look at each other]
James T. Kirk: Understood. What's your plan?
Pavel Chekov: We will beam in tonight, collect the photons, and beam out. No one will ever know we were there.
James T. Kirk: Understood and approved. Keep me informed. Kirk out.