The most profound security threat we face today is global warming....climate change has the capacity to change the way all of us live.

When I think about the world I would like to leave to my daughter and the grandchildren I hope to have, it is a world that moves away from unequal, unstable, unsustainable interdependence to integrated communities - locally, nationally and globally - that share the characteristics of all successful communities.

My plan after office is to get up and spend that entire first day helping my wife move into her new senatorial office.

The divide of race has been America's constant curse. Each new wave of immigrants gives new targets to old prejudices. Prejudice and contempt, cloaked in the pretense of religious or political conviction, are no different. They have nearly destroyed us in the past. They plague us still. They fuel the fanaticism of terror. They torment the lives of millions in fractured nations around the world. These obsessions cripple both those who are hated and, of course, those who hate, robbing both of what they might become.

In the emerging global economy, everything is mobile: capital, factories, even entire industries. The only resource that's really rooted in a nation--and the ultimate source of all its wealth--is its people.

The world economy, the world environment, the world AIDS crisis, the world arms race: they affect us all.

One of the main reasons we ought to re-elect President Obama is that he is still committed to constructive cooperation... He appointed Republican secretaries of defense, the Army and transportation. He appointed a vice president who ran against him in 2008.