Kirk: (while fighting with Rojan) You thought I was taking your woman away from you. You're jealous! You tried to kill me with your bare hands. Would a Kelvan do that? Would he have to? You're reacting with the emotions of a human. You are a human!
Rojan: No, I cannot be! (shoves Kirk to the door as Spock and McCoy enter and catch him)
Kirk: I'm stimulating him. (McCoy pushes him back into the fight)