Look up at the stars, not down at your feet.

I want to know why the universe exists, why there is something greater than nothing.

The idea of 10 dimensions might sound exciting, but they would cause real problems if you forget where you parked your car.

In Britain, like most of the developed world, stem-cell research is regarded as a great opportunity. America will be left behind if it doesn't change policy.

I would like nuclear fusion to become a practical power source. It would provide an inexhaustible supply of energy, without pollution or global warming.

Even if there is only one possible unified theory, it is just a set of rules and equations. What is it that breathes fire into the equations and makes a universe for them to describe?

Issuing an insurance policy against abduction by aliens seems a pretty safe bet.