If human life were long enough to find the ultimate theory, everything would have been solved by previous generations. Nothing would be left to be discovered.

If I had a time machine, I'd visit Marilyn Monroe in her prime or drop in on Galileo as he turned his telescope to the heavens.

I was not a good student. I did not spend much time at college; I was too busy enjoying myself.

I think computer viruses should count as life. I think it says something about human nature that the only form of life we have created so far is purely destructive. We've created life in our own image.

I believe things cannot make themselves impossible.

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