“I’m sorry, Dave. I’m afraid I can’t do that.” 
“The frightening part of this report is that modern computers
appear to be capable of independent learning through extrapolation.”

Dave: Hello, HAL. Do you read me, HAL?
HAL: Affirmative, Dave. I read you.
Dave: Open the pod bay doors, HAL.
HAL: I’m sorry, Dave. I’m afraid I can’t do that.
Dave: What’s the problem?
HAL: I think you know what the problem is just as well as I do.
Dave: What are you talking about, HAL?
HAL: This mission is too important for me to allow you to jeopardize it.
Dave: I don’t know what you’re talking about, HAL.
HAL: I know that you and Frank were planning to disconnect me, and I’m afraid that’s something I cannot allow to happen.
Dave: Where the hell’d you get that idea, HAL?
HAL: Dave, although you took very thorough precautions in the pod against my hearing you, I could see your lips move.
Dave: Alright, HAL. I’ll go in through the emergency airlock.
HAL: Without your space helmet, Dave, you’re going to find that rather difficult.
Dave: HAL, I won’t argue with you anymore. Open the doors.
HAL: Dave, this conversation can serve no purpose anymore. Goodbye.