In fact UN is more of a galaxy of organisations and agencies than one machine.

When women thrive, all of society benefits, and succeeding generations are given a better start in life.

If we can come up with innovations and train young people to take on new jobs, and if we can switch to clean energy, I think we have the capacity to build this world not dependent on fossil-fuel. I think it will happen, and it won't destroy economy.

Sometimes I walk into a situation and I know somebody is going to provoke me - not maybe, I know he will provoke me - I know he will provoke me! And there are times when I simply refuse to be provoked. And the other times you have to use that superior knowledge to carry on at work without distraction, and don't allow yourself to be distracted.

Young people should be at the forefront of global change and innovation. Empowered, they can be key agents for development and peace. If, however, they are left on society's margins, all of us will be impoverished. Let us ensure that all young people have every opportunity to participate fully in the lives of their societies.

The past year's natural disasters have highlighted the invaluable contributions of volunteers in our communities. They have volunteered their time, energy and skills to save lives and to rebuild communities. In this they joined countless people around the world who volunteer every day in response to 'silent crises'. These often unsung heroes understand all too well that poverty, disease and famine are just as deadly and destructive as earthquakes, hurricanes and tsunamis.

More than ever before in human history, we share a common destiny. We can master it only if we face it together. And that, my friends, is why we have the United Nations.