The true test of the American ideal is whether we're able to recognize our failings and then rise together to meet the challenges of our time. Whether we allow ourselves to be shaped by events and history, or whether we act to shape them. Whether chance of birth or circumstance decides life's big winners and losers, or whether we build a community where, at the very least, everyone has a chance to work hard, get ahead, and reach their dreams.

Here in Europe, I think that there are a lot of young people who forget the issues that were at stake during the Cold War.

There is a word in South Africa - Ubuntu - that describes his greatest gift: his recognition that we are all bound together in ways that can be invisible to the eye; that there is a oneness to humanity; that we achieve ourselves by sharing ourselves with others, and caring for those around us.

If people find that controversial then I would just refer them to the Sermon on the Mount.

Like Joe Biden and so many other Americans, I've lost people I love deeply to cancer. I've heard often from those whose loved ones are suffering from Alzheimer's, addiction, and other debilitating diseases. Their heartbreak is real, and so we have a responsibility to respond with real solutions.

On the spectrum of successful politicians, I'm not introverted the way some have been.

We are the change we have been waiting for.