James T. Kirk:  Let me explain what 's happening here : you are a criminal ! I watched you murder innocent men and women ! I was authorized to * end * you ! And the only reason why you are still alive is because I am allowing it . So * shut your mouth * !
Khan: Captain , are you going to punch me again , over and over , until your arm weakens ... clearly you want to . So tell me , why did you allow me to live ?
James T. Kirk: We all make mistakes .
Khan: I surrendered to you because , despite your attempt to convince me otherwise , you seem to have a conscience , Mr. Kirk . If you did not , then it would be impossible for me to convince you of the truth . 23174611 . Coordinates not far from Earth . If you want to know why I did what I did , go and take a look .
James T. Kirk: Give me one reason why I should listen to you .
Khan: I can give you _ 72 _ . And they 're on board your ship , Captain . They have been , all along .