Build a platform - prepare for the unexpected...you' ll know you're successful when the platform you've built serves you in unexpected ways.

A lot of people don’t just go ahead and try things. They’ll have an idea and they’ll say — they’ll convince themselves or other people will convince them that it can’t be done. You know, one or the other. Actually I think that the first is even more dangerous and more serious. It’s convincing yourself that it can’t be done.

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.

In order to access private capital, you have to provide competitive return on investment. In order to give competitive returns to investors, you've got to operate on a profitable basis and be thinking of yourself as a business.

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

Microloans enable the poor to lift themselves out of poverty through entrepreneurship.

We believe that business can be a tool for social good.