By building a simple system, with just a few guiding principles, eBay was open to organic growth.

In the same way that you're driven in your business to keep innovating - Facebook is a wonderful example of constant innovation - think about doing that in philanthropy.

eBay's business is based on enabling someone to do business with another person, and to do that, they first have to develop some measure of trust, either in the other person or the system.

I was raised with the notion that you can do pretty much do anything you want. I always kind of just went ahead and tried things.

Whatever future you're building, don't try to program everything.

You should pursue your passion. If you're passionate about something and you work hard, then I think you will be successful.

I've got a passion for solving a problem that I think I can solve in a new way. And that maybe it helps that nobody has done it before as well.