Oftentimes, misunderstandings and antagonism surfaces most strongly when economic times are tough. And that's not surprising. If everybody is working and feeling good and making money and buying a new house and a big screen TV, you're less worried about what other folks are doing.

No matter how much you've done, or how successful you've been, there's always more to do, always more to learn, and always more to achieve.

People need to remember we are the governing party because we have diversity of opinion in our party. We're not pure. We have moderates and we have more progressives.

There was never a promise that race relations in America would be entirely resolved during my presidency or anybody's presidency. I mean, this has been a running thread - and - and fault line in American life and American politics since its founding.

We may disagree about gay marriage, but surely we can agree that it is unconscionable to target gays and lesbians for who they are - whether it's here in the United States or, as Hillary (Clinton) mentioned, more extremely in odious laws that are being proposed most recently in Uganda.

In a summer marked by instability in the Middle East and Eastern Europe, I know the world also took notice of the small American city of Ferguson, Missouri - where a young man was killed, and a community was divided. So yes, we have our own racial and ethnic tensions.

In sectors like energy, I haven't been arguing for more spending per se; I've been arguing that it doesn't make sense for us to spend $4 billion subsidizing an oil industry that's mature and very profitable. We should be using that money to finance clean energy of the future.