As a musician and a songwriter it is an act of the ego to believe that other people might be interested in your point of view. But it is usually an empathetic nature that gets you going in the first place. Music keeps the heart porous in many ways.

Facebook are an amazing team, a brilliant team. It's a technology that brings people together.

There was a moment when Prince did rock & roll with a sponge-y seductive sound. I think that's what was in our head for 'Get On Your Boots.' But actually, the song is much more punk rock.

Africa is a continent in flames. And deep down, if we really accepted that Africans were equal to us, we would all do more to put the fire out. We're standing around with watering cans, when what we really need is the fire brigade.

When a nation is over-reliant on one or two commodities like oil or precious minerals, corrupt government ministers and their dodgy associates hoard profits and taxes instead of properly allocating them to schools and hospitals.

I'm never nervous when I go to meet heads of state. I feel they should be nervous, because they are the ones who'll be held accountable for the lives their decisions will impact the most.

Dream up the kind of world you want to live in. Dream out loud.