In order to achieve a true understanding of string theory, some new idea will be required, and most likely, some break with the concepts on which we've traditionally based physical theory.

The Big Bang theory is the idea that if we go back early enough in the history of the universe - and we can do this, of course, by looking at starlight coming to us from billions of years ago - we will see a very hot and dense period where the universe was much smaller, denser, and hotter.

Some wonder whether some day we will arrive at a theory of everything and run out of new problems to solve - much as the effort to explore the earth ran out of new continents to explore.

Quantum field theory was originally developed for the treatment of electrodynamics, immediately after the completion of quantum mechanics and the discovery of the Dirac equation.

In so far as a scientific statement speaks about reality, it must be falsifiable; and in so far as it is not falsifiable, it does not speak about reality.

As far as skincare goes, I'm from the school of 'you are what you eat.' I always promote a vegan lifestyle, not just because it's great for our environment and for humanity, but because if you cut out dairy, for example, there's scientific proof that it can actually help your complexion.

I'm constantly trying to work on the person that I am and work on my shortcomings, and I guess I want people to know that it's ok to be a work in progress, as long as you keep trying to figure it out. But that search and that discovery is what makes life kind of rich, and it's what makes life rich... period.

But if you want to know the truth, the weirdest thing that has happened has been my discovery that people who attend the conventions are filled with love.