How we cite our quotes: All quotations are from 2001: A Space Odyssey.
Quote #7
FLOYD: Good day, gentlemen. This is a prerecorded briefing made prior to your departure and which, for security reasons of the highest importance, has been known onboard during the mission only by your HAL 9000 computer. Now that you are in Jupiter's space and the entire crew is revived, it can be told to you.
The twist ending of HAL's demise is that even the series 9000 computer kept the truth from the crew. Arthur Clarke himself suggested that this is what ultimately drove HAL insane—the conflict between lying to the crew and having a duty to protect them at all costs. Those two programs were incompatible. (Source)
Quote #8
After making contact with the Jupiter monolith, Bowman is transported across time and space. After witnessing mind-expanding images, the birthing of galaxies and extraterrestrial landscapes, Bowman finds his EVA pod has been transported into a place that appears to be a hotel room decorated in the neoclassical style.
The real movers and shakers of the whole story are the extraterrestrials. All of humanity's machinations—from bone clubs to spaceships, artificial intelligence to top secret information—are part of the unseen alien's manipulation of our species. Their goal was to lead us to Jupiter in an intergalactic scavenger hunt, and they succeeded. Why? That's a harder question to answer.