No generation has had the opportunity, as we now have, to build a global economy that leaves no-one behind. It is a wonderful opportunity, but also a profound responsibility.

The seven principles of Kwanzaa - unity, self-determinat ion, collective work and responsibility, cooperative economics, purpose, creativity and faith -- teach us that when we come together to strengthen our families and communities and honor the lesson of the past, we can face the future with joy and optimism.

What we should be doing [in US] is accelerating every year our efforts to reduce our greenhouse gas emissions, have a cleaner energy future, have much more energy conservation. And this won't hurt anybody. This will create a new economy for America, if we've got the discipline to do it.

My father left me with the feeling that I had to live for two people, and that if I did it well enough, somehow I could make up for the life he should have had. And his memory infused me, at a younger age than most, with a sense of my own mortality. The knowledge that I, too, could die young drove me both to try to drain the most out of every moment of life and to get on with the next big challenge. Even when I wasn't sure where I was going, I was always in a hurry.

More people can be great leaders than think they can, but they need a purpose greater than themselves.

I want American Dream growth - lots of new businesses, well-paying jobs, and American leadership in new industries, like clean energy and biotechnology.

Only a fool does not look to explain his mistakes.