The United States will do what we must to prevent Iran from obtaining a nuclear weapon.

The Democrats should not waiver on our core beliefs and principles.

Don’t ever let anybody tell you that your efforts don’t matter or that your voice doesn’t count. Don’t ever believe that you can’t make a difference. You have.

It will be up to each of you to make sure that young people, African Americans, Latinos and women who powered our victory in 2008 stand together once again.

We remain a young nation, but in the words of Scripture, the time has come to set aside childish things. The time has come to reaffirm our enduring spirit; to choose our better history; to carry forward that precious gift, that noble idea, passed on from generation to generation: the God-given promise that all are equal, all are free, and all deserve a chance to pursue their full measure of happiness.

There is a theory that basically says that we can shred regulations and consumer protections and give more and more to the most, and somehow prosperity will trickle down. It hasn't worked. And I think that the fundamentals of the economy have to be measured by whether or not the middle class is getting a fair shake.

We will respond to the threat of climate change, knowing that the failure to do so would betray our children and future generations