This mission is too important for me to allow you to jeopardize it.

More from 2001: A Space Odyssey

• Open the pod bay door, Hal.
• You know, of course, though he's right about the 9000 series having a perfect operational record--they do.
• What's that? Chicken?
• I am putting myself to the fullest possible use, which is all I can think that any conscious entity can ever hope to do.
• I honestly think you ought to calm down; take a stress pill and think things over.
• I'm afraid I can't let you do that Dave.