Science predicts that many different kinds of universe will be spontaneously created out of nothing. It is a matter of chance which we are in.
Stephen HawkingWe only have to look at ourselves to see how intelligent life might develop into something we wouldn't want to meet.
Stephen HawkingThink of our DNA. In the last million years, our DNA hasn't changed at all. It's really much the same as it was in the jungle, a million, two millions years ago. But in the last 200 years, our destructive capacities have increased many, many millions of times over. Why don't we see intelligent signals from outer space? Because in all likelihood, once the civilization reaches the point our civilization has reached, it destroys itself.
Stephen HawkingOne could say: "The boundary condition of the universe is that it has no boundary." The universe would be completely self-contained and not affected by anything outside itself. It would neither be created nor destroyed. It would just BE.
Stephen HawkingIf what we regard as real depends on our theory, how can we make reality the basis of our philosophy? But we cannot distinguish what is real about the universe without a theory. It makes no sense to ask if it corresponds to reality, because we do not know what reality is independent of a theory.
Stephen Hawking