James Doohan as Mr. Scott: "Don't do it, Captain."

William Shatner as Kirk: "How many others have you done this to? What gives you the right to hand out life and death?"

William Shatner: "Kirk to Enterprise. Enterprise? Enterprise, come in. Kirk to Enterprise."

Leonard Nimoy as Spock: "Live long and prosper."

Leonard Nimoy as Spock: "This appears to be an archive or library of some kind."

Nimoy: "I'll avoid giving him any medication at this time... Perhaps if he's kept quiet and warm, he may recover naturally."

Ian Wolfe as Mr. Atoz: "Ah, you find it difficult to choose, is that it? Yes, a wide range of alternatives is a mixed blessing."

Ian Wolfe: "I'm sure I was clear."

William Shatner as Kirk: "I want to find the exact disk that they were viewing."

DeForest Kelley as McCoy: "Haven't you done anything about it?"

Ian Wolfe: "I warn you most urgently – Make your escape before it's too late."

Shatner: "Explain."

Ian Wolfe: "What is your particular field of interest?"

Ian Wolfe: "I'm sure you'll find something here that pleases you."

Kelley: "It's just not like you to give up trying."

Ian Wolfe: "Yes, yes, yes! They are all gone!"

Ian Wolfe: "If you wish to trace a specific person, I'm sorry, but that information is confidential."

Shatner: "What are you waiting for?? Hurry!"

Shatner: "You don't really want to hurt me, do you?"

DeForest Kelley as McCoy: "Now you listen to me, you pointed-eared Vulcan!"

William Shatner as Kirk: "Their situation is desperate."

William Shatner: "What's wrong with her?"

Harry Landers as Dr. Arthur Coleman: "Exposure to radiation."

DeForest Kelley as McCoy: "What form of radiation was it?"

Landers: "Nothing I've ever encountered."

William Shatner: "You must remain absolutely quiet."

Leonard Nimoy as Spock: "Help will have to be immediate."