The most profound security threat we face today is global warming....climate change has the capacity to change the way all of us live.

You can't say you love your country and hate your government.

...the fact [is] that our borders leak like a sieve: those things cannot be permitted to continue in good conscience.

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

Over time, the more we bring China into the world, the more the world will bring freedom to China.

If you want a future of shared prosperity, where the middle class is growing and poverty is declining, where the American Dream really is alive and well again, and where the United States remains the leading force for peace and justice and prosperity in a highly competitive world, you have to vote for Barack Obama.

It is important to me that everybody who has been hurt know that the sorrow I feel is genuine. First and most important, my family, my friends, my staff, my cabinet, Monica Lewinsky and her family and the American people. I have asked all for their forgiveness.