I think George W. Bush has a warm, engaging personality. But, you know, the presidency is more than just a popularity contest.

There's an old African proverb that says "If you want to go quickly, go alone. If you want to go far, go together." We have to go far - quickly. And that means we have to quickly find a way to change the world's consciousness about exactly what we're facing, and why we have to work to solve it.

Well-established theories collapse under the weight of new facts and observations which cannot be explained, and then accumulate to the point where the once useful theory is clearly obsolete.

It's as if we think the laws of physics are subject to debate and amendment and political contributions can sway the laws of physics.

The message from Wal-Mart today to the rest of the business community is there need not be any conflict between the environment and the economy. We will find the way not only to reconcile (those), but to find new profits and new opportunities as we do the right thing.

Today I challenge our nation to commit to producing 100 percent of our electricity from renewable energy and truly clean carbon-free sources within 10 years.

My parents were true believers in the efficacy of American constitutional democracy, and I was thoroughly inculcated with reverence for what we the people are capable of doing. The complication in that simple narrative is that as I got older, the Vietnam War shook my confidence in how our democracy was working. I ended up serving in that war, but it started with a lie, and I was very proud of my father for being one of its earliest opponents.