I've gained first hand knowledge of the challenges faced by people with disabilities. It's made me understand that those of us who have full use of our physical faculties owe an enormous amount of respect and sensitivity to people who don't.

I am committed to curbing the influence of money in our political system.

Because primarily of the power of the Internet, people of modest means can band together and amass vast sums of money that can change the world for some public good if they all agree.

The fundamental problem you have anywhere is when people think their lives and the lives of their children don't matter, they they are somehow disposable, just like a paper napkin after a lunch at a restaurant or something, if we want our freedom to be in deed as well as word in America, we have to make people feel that everybody matters again.

To realize the full possibilities of this economy, we must reach beyond our own borders, to shape the revolution that is tearing down barriers and building new networks among nations and individuals, and economies and cultures: globalization. It's the central reality of our time.

Without question, bicycling is an efficient, economical and environmentally sound form of transportation and recreation. Bicycling is a great activity for families, recreational riders and commuters. Hillary, Chelsea and I have bicycles.

There's nothing wrong with making mistakes. Just don't respond with encores.