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A unified theory would put us at the doorstep of a vast universe of things that we could finally explore with precision.

There is a theory which states that if ever anyone discovers exactly what the Universe is for and why it is here, it will instantly disappear and be replaced by something even more bizarre and inexplicable. There is another theory which states that this has already happened.

So it's possible that someday, by understanding a little bit more about how the world works, it will come back to help us in some other way that will be surprising.

If we do discover a complete theory, it should be in time understandable in broad principle by everyone. Then we shall all, philosophers, scientists, and just ordinary people be able to take part in the discussion of why we and the universe exist.

Literature is always trying to show other parts of this immense universe in which we live. It's endless. I'm sure there will be other writers who will discover new worlds.

What I do is very theoretical. It won't necessarily have implications for anything anyone is doing tomorrow, yet you know that there's a sense of progress in science, and as we understand more, it just turns out that, somehow, the world evolves with us.

The universe at large is full of questions that we still don't know anything about, and there will be always young people, brilliant, who are going to make new discoveries.

My experience in science has always been that the future always exceeds what we believe is possible. I suspect that we will explore the universe.

Some day we'll move into space and start ensuring the survival of our species beyond Earth, whether it happens in a hundred years or a thousand.

If you ask almost any of them, 'Do you stand behind your theory? Is this the answer?' I think almost everyone would say, 'No, no, no. I'm just trying to expand the range of possibilities.' We really don't know what's going on.