I'm kind of a night owl.

Few challenges facing America and the world are more urgent than combating climate change. The science is beyond dispute and the facts are clear.

The sweetest sound I know is the Muslim call to prayer.

The problem with all these tired excuses for inaction is that it suggests a fundamental lack of faith in American business and American ingenuity.

The elevation of appearance over substance, of celebrity over character, of short term gains over lasting achievement displays a poverty of ambition. It distracts you from what's truly important.

Those who oppose reform will also tell you that under our plan, you won't get to choose your doctor - that some bureaucrat will choose for you. That's also not true.

I strongly agree with Vice President Gore that we cannot drill our way to energy independence, but must fast-track investments in renewable sources of energy like solar power, wind power and advanced biofuels...