Our actions - and inaction - touch people every day, people we may never know and never meet.

Dignity is more important than wealth.

Girls and women are most victimised in societies where boys and men are disempowered.

Africa can stun you in an instant. It can throw floods and drought and disease at you, sometimes all at the same time. In the next moment, it will tease you with its magnificent beauty, so even if you don't forget, you can find a way to forgive. Ultimately, it keeps you coming back for more.

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

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.

I have also been touched by the dark side of power and leadership.