Although September 11 was horrible, it didn't threaten the survival of the human race, like nuclear weapons do.
Stephen HawkingOne of the basic rules of the universe is that nothing is perfect. Perfection simply doesn't exist.....Without imperfection, neither you nor I would exist
Stephen HawkingWe have made remarkable progress in the last hundred years, but if we want to continue, our future is in space.
Stephen HawkingLife on Earth is at the ever-increasing risk of being wiped out by a disaster, such as sudden global warming, nuclear war, a genetically engineered virus or other dangers. I think the human race has no future if it doesn't go into space. I therefore want to encourage public interest in space.
Stephen Hawking