Students deserve great teachers. And teachers deserve the support they need to become great.

The general idea of the rich helping the poor, I think, is important.

If your goal is to make the world a better place, one thing you can do is pick a specific challenge that you really care about. Then, learn as much as you can about it and try to volunteer your time to help an organization that is working in this area. While you're doing that, look for creative new ways to use technology to tackle parts of the problem that you come in contact with.

I'm certainly well taken care of in terms of food and clothes.

Employers have decided that having the breadth of knowledge that's associated with a four-year degree is often something they want to see in the people they give that job to.

One thing people underestimate is how markets don't allow anyone to do anything except make better and better products. There's not much leeway. The world is a lot more competitive than most people think, particularly in a high-technology area. If a company takes its eye off improving its products, if it tries to do anything that would be viewed as an exercise of power, it'll be displaced very rapidly.

I remember thinking quite logically that I didn't want to spoil my children with wealth and so that I would create a foundation, but not knowing exactly what it would focus on.