You have countries like India that have tried to help untouchables, with essentially affirmative-action programs, but it hasn't fundamentally changed the structure of their societies.

The alternative, no limits on Iran's nuclear program, no inspections, an Iran that's closer to a nuclear weapon, the risk of regional nuclear arms race, and the greater risk of war - all that would endanger our [American] security.

This is our moment...while we breathe, we hope. And where we are met with cynicism and doubts and those who tell us that we can't, we will respond with that timeless creed that sums up the spirit of a people: Yes, we can.

It's time to end the hypocrisy of those who accumulate wealth through the global economy, and then siphon funds to those who teach children to tear it down.

I look forward to teaching the occasional class, 'cause I was a professor. And I had fun doing it.

My presidency is not over. I've got another five years coming up.

Citizenship means standing up for everyone's right to vote.***