I grew up in a middle class household with parents, went to good schools, and never feared for anything, never wanted for anything that was really important. For all of us living in this world, all of us who have the resources, for us to not dedicate ourselves to giving something back, is to leave the world a lesser place.

Poor countries are being forced to deal with an unprecedented health crisis without the means to tackle it . Governments can only show how seriously they are taking this crisis by taking immediate action to provide four million extra health workers and to grant those in need access to affordable medicines.

To try to help people have babies in a healthy way and to celebrate the process of delivering a child which will be healthy is, I think, almost the best part of healthcare.

I mean, I'm 48 years old and I've been through a lot in my life - you know, loss, whether it be death, illness, separation. I mean, the failed expectations... We all have dreams.

I stand on the shoulders of giants that have gone before me, in terms of affording people like myself, women, the access to democracy, the vote, medical treatment, education, everything that I've been given. It's all been earned. Therefore I feel it's incumbent on me personally to just contribute something, to add to a collective voice that needs to be here right now, to build it up to a tipping point, to make the world aware that women's rights still have to be addressed and that the word 'feminism' has been devalued and needs to be reclaimed.

If you come face to face with some really challenging situations and tragic circumstances - you are going in there with a purpose. You are not going in there as a tourist.

I'm not intensely private - I talk a great deal about my life and my work - I just don't play the game to excess.