For we have always understood that when times change, so must we, that fidelity to our founding principles requires new responses to new challenges, that preserving our individual freedoms ultimately requires collective action.

We want to see the Iranians engage, and as you know, we have attempted to bring about that engagement over the course of the last three-plus years. It has not proven effective.

By some estimates, the oil you recently discovered off the shores of Brazil could amount to twice the reserves we have in the United States. We want to work with you. We want to help with technology and support to develop these oil reserves safely, and when you're ready to start selling, we want to be one of your best customers.

The program grew out of a desire to address a gap identified after 9/11 ... The program does not involve the NSA examining the phone records of ordinary Americans. Rather, it consolidates these records into a database that the government can query if it has a specific lead - phone records that the companies already retain for business purposes.

It's important to recognize that you can't have 100 percent security and also then have 100 percent privacy and zero inconvenience.

Look, first of all, the climate is changing. I don't think the science is clear what percentage is man-made and what percentage is natural. It's convoluted. And for the people to say the science is decided on, this is just really arrogant, to be honest with you, it's this intellectual arrogance that now you can't even have a conversation about it. The climate is changing, and we need to adapt to that reality.

I don't think marriage is a civil right, but I think that being able to transfer property is a civil right.