This mission is too important for me to allow you to jeopardize it.
HAL 9000
I am putting myself to the fullest possible use, which is all I can think that any conscious entity can ever hope to do.
HAL 9000
I honestly think you ought to calm down; take a stress pill and think things over.
HAL 9000
I'm sorry, Dave. I'm afraid I can't do that.
HAL 9000
What are you doing, Dave?
HAL 9000