When we look out into space, we're looking back in time; the light from a galaxy a billion light-years away, for instance, will take a billion years to reach us. It's an amazing thing. The history is there for us to see. It's not mushed up like the geologic record of Earth. You can just see it exactly as it was.

When I won the MacArthur, I didn't receive a different amount of money than the men did.

I didn't know what kinds of questions to ask in mathematics. In physics, I could see there were things that were known and things that weren't.

There are things done under the name of science which are ridiculous. But there is also stuff done which sounds funny but is really serious.

I try and work out as much as I can because when you exercise, it releases endorphins and makes you feel really good. I also make sure I schedule time with my friends, family, and loved ones because I realize that, as well as your physical well-being, you have to look out for your mental well-being, too.

A close family member once offered his opinion that I exhibit the phone manners of a goat, then promptly withdrew the charge - out of fairness to goats.

The basic technical protocols that have enabled the Internet to work in such a globally interconnected way are developed and shared openly by a community of engineers.

Our children will outwit us if they want; for when it comes to technology, they hold the higher ground. Unlike other tools passed carefully and ceremonially from one generation to the next - the sharp scissors, the car keys - this is one they understand better than we do.