The first - the most obvious test of a true social entrepreneur - is are they possessed, really possessed by an idea.

Public service and respect for ideas is a recurrent theme in both the American and Australian sides of my family.

The job of a social entrepreneur is to recognize when a part of society is stuck & to provide new ways to get it unstuck.

What is the most powerful force in the world? And I think you would agree that is a big idea if it is in the hands of an entrepreneur who is actually going to make the idea not only happen, but spread all across society. And we understand that in business but we have need for entrepreneurship just as much in education, human rights, health, and the environment as we do in hotels and steel.

All the problems sitting there are an invitation for you to be creative, make use of your skills and resources and find a solution.

In an increasingly connected world it is less likely that a few people 'manage' everyone else. The new environment requires a shift in the organization of both institutions and societies, one of flexible teams of teams that come together around whatever change opportunities exist and then reform around the next.

It's the combination: big idea with a good entrepreneur: there's nothing more powerful. That's just as true [for] education and human rights as it is for hotel or steels.