All of my life, I have been fascinated by the big questions that face us, and have tried to find scientific answers to them. Perhaps that is why I have sold more books on physics than Madonna has on sex.

I don't believe that the ultimate theory will come by steady work along existing lines. We need something new. We can't predict what that will be or when we wi…

Although September 11 was horrible, it didn't threaten the survival of the human race, like nuclear weapons do.

For millions of years, mankind lived just like the animals. Then something happened which unleashed the power of our imagination. We learned to talk and we lea…

Science cannot be stopped. Man will gather knowledge no matter what the consequences - and we cannot predict what they will be. Science will go on - whether we…

'Explanations are never the most interesting part of science.'

I think that science would never have achieved much progress if it had always imagined unknown obstacles hidden round every corner. At least we may peer ginger…