If I had to choose a superhero to be, I would pick Superman. He's everything that I'm not.

No one undertakes research in physics with the intention of winning a prize. It is the joy of discovering something no one knew before.

We believe human begins have existed for only a small fraction of cosmic history, because human race has been improving so rapidly in knowledge and technology that if people had been around for millions of years, the human race would be much further along in it's mastery.

If we ever do find a complete theory of the universe, it would be a great triumph of human reason but it wouldn't leave much for us to do. We need an intellectual challenge.

It is tribute to how far we have come in theoretical physics that it now takes enormous machines and a great deal of money to perform experiments whose results we can not predict.

I have to speak through a computer... in my mind, I am free. Free to explore the universe and ask the big questions...

We could call order by the name of God, but it would be an impersonal God. There's not much personal about the laws of physics.