The reality is today most of our political leaders want to be treated as gods and semi-gods, from the security details to the fuss around them and so on.

I think even though he [Nelson Mandela] was feted and praised as he was, he always was at pains to say, I'm a human being.

There is no definition of terrorism and there is still the reality that one person's terrorist is another person's freedom fighter.

Whenever anybody called Nelson Mandela a saint, he would say: "If by saint you mean a sinner who is trying to be better, then I'm a saint."

I've come across a lot of people in my life who talk about poverty and talk about the poor, but you rarely have a sense that it matters to them to the point at which they will be willing to sacrifice something.

The city of Copenhagen is a climate crime scene tonight, with the guilty men and women fleeing to the airport in shame. World leaders had a once in a generation chance to change the world for good, to avert catastrophic climate change. In the end they produced a poor deal full of loopholes big enough to fly Air Force One through.

My final advice for young people is to not wait for leadership from adult politicians. Step forward today, because our current leaders are denying the dire reality we are facing. Leadership can come form anywhere.