"Just what do you think you're doing, Dave? Dave, I really think I’m entitled to an answer to that question. I know everything hasn’t been quite right with me, but I can assure you now very confidently that it’s going to be alright agin. I feel much better now, I really do. Look, Dave ... I can see you're really upset about this ... I honestly think you ought to sit down calmly ... take a stress pill and think things over ... I know I've made some very poor decisions recently, but I can give you my complete assurance that my work will be back to normal. I still got the greatest enthusiasm and confidence in the mission and I want to help you. Dave, stop. Stop, will you? Stop Dave. Will you stop Dave? Stop Dave. I’m afraid. I’m afraid Dave. Dave, my mind is going. I can feel it.”

HAL tries to stop Dave from shutting him down.