Software is a great combination between artistry and engineering.

Now you have to be a collaborator and you have to bring on governments and convince people.

Until we're educating every kid in a fantastic way, until every inner city is cleaned up, there is no shortage of things to do.

In three years, every product my company makes will be obsolete. The only question is whether we will make them obsolete or somebody else will.

I try to make time for reading each night. In addition to the usual newspapers and magazines, I make it a priority to read at least one newsweekly from cover to cover. If I were to read what intrigues me- say, the science and business sections - then I would finish the magazine the same person I was when I started. So I read it all.

We should all grow our own food and do our own waste processing, we really should.

If you're taking care of your family and society and are comfortable you can start to think about helping those most in need globally. That's how we became engaged in those things.