My whole life has been spent with people who have taken every knock in the world. No advantages. Yet they greet you with a big smile, they give you what they have, and they keep coming back. They are the fighters.

Human beings tend not to spend money on health preventionally. We tend to spend it on top treatment.

What is the cost of not daring? What is the cost of not trying?

There is power in creating a small model, and then you can create an alliance of other small models.

Monsters will always exist. There's one inside each of us. But an angel lives there, too. There is no more important agenda than figuring out how to slay one and nurture the other.

For too much of history, we've viewed the world's precious resources - both environmental and human - as things to extract, to make the most of in order to maximize their potential.

As a young woman, I dreamed of changing the world. In my twenties, I went to Africa to try and save the continent, only to learn that Africans neither wanted nor needed saving. Indeed, when I was there, I saw some of the worst that good intentions, traditional charity, and aid can produce.