The art of leadership is saying no, not saying yes. It is very easy to say yes.

I think it is having answers and not simply anger, and providing solutions that people believe will change their lives in a radical way but do it in a way that's sensible.

In April 1991, after the Gulf war, Iraq was given 15 days to provide a full and final declaration of all its WMD.

We are going to expand enormously -- our economy, our consumption, over the years to come ... But the consequences of that on emissions are going to be severe unless we change direction.

Whatever the short term clashes between protecting the environment and eradicating poverty, medium term and long term it is clear. Unless we grow sustainably, at some point we face catastrophe

Every so often, I feel I should graduate to classical music, properly. But the truth is, I'm more likely to listen to rock music.

My view is that we're entering into a situation of enormous instability, insecurity, fragility.