Leonard Nimoy as Spock: "Where there's no emotion, there's no motive for violence."

DeForest Kelley as Dr. McCoy: "He's dead, Captain."

William Shatner: "I'm Captain Kirk."

Ted Cassidy as the voice of Balok: "You are wasting time and effort. There is no escape!"

William Shatner: "Ready, doctor?"

DeForest Kelley: "No, but you won't let that stop you."

Ted Cassidy as the voice of Balok: "There is no escape!"

DeForest Kelley: "What am I, a doctor, or a moon shuttle conductor?"

Ted Cassidy as the voice of Balok: "No further communication will be accepted."

Leonard Nimoy as Spock: "When one is outmatched, the game is over. Checkmate."

William Shatner: "Is that your best recommendation?"

William Shatner: "Mr. Scott, ready the transporter room."

James Doohan as Mr. Scott: "Aye, sir."