Many say our world is at a tipping point. If we do not act together, if we do not act responsibly, if we do not act now, we risk slipping into a cycle of poverty, degradation, and despair.

I call for the need of world leaders to address climate change and reduce the increasing risk of disasters- and world leaders must include mayors, townships and community leaders.

Achieving gender equality requires the engagement of women and men, girls and boys. It is everyones responsibility.

We must unite. Violence against women cannot be tolerated, in any form, in any context, in any circumstance, by any political leader or by any government.

With her courage and determination, Malala has shown what terrorists fear most: a girl with a book.

We have seen in the past where leaders have not been open-minded or have not been flexible. That's why the people came out to the streets and shouted and chanted for more reforms and more freedoms.

One of the main lessons I have learned during my five years as Secretary-General is that broad partnerships are the key to solving broad challenges. When governments, the United Nations, businesses, philanthropies and civil society work hand-in-hand, we can achieve great things.