It's pretty amazing to go from a world where computers were unheard of and very complex to where they're a tool of everyday life.

Whether it's Google or Apple or free software, we've got some fantastic competitors and it keeps us on our toes.

I feel certain that the personal computer is as revolutionary in terms of the way it will change the way we work, learn, and entertain ourselves as any of these previous advances.

The US really has to get out in front. We are the biggest per person, by a substantial amount, greenhouse emitters, and we give the most foreign aid, not per person but in absolute.

Now, we put out a lot of carbon dioxide every year, over 26 billion tons. For each American, it's about 20 tons. For people in poor countries, it's less than one ton. It's an average of about five tons for everyone on the planet. And, somehow, we have to make changes that will bring that down to zero.

I was lucky to be involved and get to contribute to something that was important, which is empowering people with software.

I believe that if you show people the problems and you show them the solutions they will be moved to act.