The world is over-armed and peace is underfunded.
As Secretary-General he pressed hard on global warming and on the conflict in Darfur, where he helped persuade Sudan's president to admit peacekeeping troops. Since leaving office he has chaired the ethics commission of the International Olympic Committee and co-founded the Ban Ki-moon Centre for Global Citizens.
With her courage and determination, Malala has shown what terrorists fear most: a girl with a book.
When Nelson Mandela walked free, the world sang with joy. Ever since, South Africa has stood as a beacon of hope for Africa.
Climate change does not respect border; it does not respect who you are - rich and poor, small and big. Therefore, this is what we call 'global challenges,' which require global solidarity.
By including children with different learning abilities in mainstream and specialized schools, we can change attitudes and promote respect. By creating suitable jobs for adults with autism, we integrate them into society.
As a child growing up during the Korean War, I knew poverty. I studied by candlelight.
I treasure my meetings with individuals affected by autism - parents, children, teachers and friends. Their strength is inspiring. They deserve all possible opportunities for education, employment and integration.
Education promotes equality and lifts people out of poverty. It teaches children how to become good citizens. Education is not just for a privileged few, it is for everyone. It is a fundamental human right.
Achieving gender equality requires the engagement of women and men, girls and boys. It is everyone's responsibility.
Equality for women is progress for all.