English theoretical physicist, cosmologist, and author who was director of research at the Centre for Theoretical Cosmology at the University of Cambridge
Science is increasingly answering questions that used to be the province of religion.
Time travel used to be thought of as just science fiction, but Einstein's general theory of relativity allows for the possibility that we could warp space-time so much that you could go off in a rocket and return before you set out.
We are just an advanced breed of monkeys on a minor planet of a very average star. But we can understand the Universe. That makes us something very special.
I think the human race doesn't have a future if it doesn't go into space.
I don't think the human race will survive the next thousand years, unless we spread into space.
A zero-gravity flight is a first step toward space travel.
If we want to travel into the future, we just need to go fast. Really fast. And I think the only way we're ever likely to do that is by going into space.
Before 1915, space and time were thought of as a fixed arena in which events took place, but which was not affected by what happened in it. Space and time are now dynamic quantities... space and time not only affect but are also affected by everything that happens in the universe.
Time can behave like another direction in space under extreme conditions.
I have wanted to fly into space for many years, but never imagined it would really be feasible.