It's easy to see why conservatives would be salivating at the thought of a Hillary primary challenge. Presidents who face serious primary challenges—Ford, Carter, Bush I—almost always lose. The last president who lost reelection without a serious primary challenge, by contrast, was Herbert Hoover. But in truth, the chances that Obama will face a primary challenge are vanishingly slim, and the chances that he will lose reelection only slightly higher. No wonder conservatives are fantasizing about Hillary Clinton taking down Barack Obama. If she doesn't, it's unlikely they will.

I think the tragedy of Barack Obama's presidency is that although a lot of people around the world really admire Barack Obama a lot, they don't admire the American political and economic model as much as they used to.

I hope Barack Obama puts another woman on the Supreme Court. And this time, I hope it's a woman with kids.

I've heard people in the Middle East tell me that the most inspiring thing for them as people struggling against dictatorship in the Middle East is the memory of the civil rights movement.

I think ultimately Obama's ability to rebuild America's image in the world will depend less on his personal good will and more his ability to rebuild an American economic model that seems stable and humane and dynamic.

Our sense of optimism, our can-do spirit, that's a source of great strength in America. But when there are no limits at all and we've gone through whole periods where we think everything has gone right, that's when disaster tends to strike.

There's a ton of academic literature that shows people are much more critical of female leaders than they are of male leaders. They're much less tolerant of female ambition, much more threatened by female power.