The longer we delay, the more we will pay.

Climate change...is, simply, the greatest collective challenge we face as a human family.

Reason doesn't mean very much in a country like North Korea.

People everywhere look to the United States to use its remarkable power to help lift humanity up and to work for the common good.

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

There is one universal truth, applicable to all countries, cultures and communities: violence against women is never acceptable, never excusable, never tolerable.

Between now and 2015, we must make sure that promises made become promises kept. The consequences of doing otherwise are profound: death, illness and despair, needless suffering, lost opportunities for millions upon millions of people.