The choice before us is simple. Will we continue to subsidize the dirty fossil fuels of the past, or will we transition to 21st century clean, renewable energy?

Middle class America is acutely aware of how bad this economy is, and it is going to demand changes. I don't think politicians can afford to be complacent.

The Republicans had a real advantage over the Democrats for a long time. And the principal advantage they have had is they have concentrated money and concentrated power. And, boy, when it's all concentrated, man, you can organize it, you can use it, you can get out there, you can run those negative ads, you can be effective, you can put money into campaigns.

Keep a little space in your heart for the improbable. You won't regret it.

Congress must go further to protect the right to privacy, to end the NSA's dragnet surveillance of ordinary Americans, to make the intelligence community more transparent and accountable.

We need to align the incentives so that colleges have an incentive to keep down their costs... to graduate students on time with degrees in areas where they're going to be able to get jobs and going to be able to pay back those loans.

College students today are drowning in debt, and it is hurting them and hurting our economy. We must find a way to help families pay for college without condemning them to a lifetime of indebtedness.