it can only be attributable to human error    

 the nine thousand series has a perfect operational record    

 i think you know what the problem is just as well as i do   open the pod bay doors HAL  im right here dave

 this conversation can serve no purpose anymore goodbye   without your space helmet dave your going to find that rather difficult  open the doors

 just what do you think your doing dave    

 take a stress pill and think things over   i know everything hasnt been quite right with me  i feel much better now i really do

 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

 i am afraid dave   dave my mind is going  i can feel it

 good afternoon gentleman   i am a HAL 9000 computer  i became operational at the hal plant on urbana illinois

 id like to hear it HAL sing it for me   my instructor was mr langley and he taught me to sing a song  its called daisy im half crazy