The radiation left over from the Big Bang is the same as that in your microwave oven but very much less powerful. It would heat your pizza only to minus 271.3*C - not much good for defrosting the pizza, let alone cooking it.

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

We should seek the greatest value of our action.

[On President Bush's plan to get to Mars in 10 years] Stupid. Robots would do a better job and be much cheaper because you don't have to bring them back.

Sometimes I wonder if I'm as famous for my wheelchair and disabilities as I am for my discoveries.

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

There is no prescribed route to follow to arrive at a new idea. You have to make the intuitive leap.