Which is the best science fiction book? Which is the best science fiction book?

I would
argue that Brave New World is one of the best sci-fi reads. It combines
cloning technology with sleep-teaching and conditioning experimentation and the science of drugs
(Soma) to create a future dystopia that is just far enough out there to believe it could never
happen, but just realistic enough to be afraid that it might.

A close second,
I think, would  be HG Wells' classic, The Time Machine. This has inspired
many similar stories about what it would be like to be able to jump back and forth between the
eras.