Human Extinction Quotes
One fascinating thing about this quotation is the date. It would be the next 150 years where the great scientific leaps would take place. There was no inkling of computers or nuclear weapons.
There are two main interpretations of Hawking's statement: One that artifical beings will eventuall gain dominance and have no need for humans. The other is that humans will more and more incorporate computer technoliogy and powerful sensors into their bodies or eventually move human brains into artificial entities and the human race will evolve to the degree that our species as it exists now will no longer exists. Humans may well evolve themselves. It is not clear which of these views he leaned towards.