I don't regret the fervor, because I do believe, in the African American community but also for other communities, and I know from talking to people, for communities around the world, the election of an African American to the most powerful office on Earth meant things had changed, and not just in superficial ways. That in some irreversible way the world was different.

I think there are a lot of factors going into an election. I think the bottom line is - is that Donald Trump is gonna be sworn in as the 45th President of the United States of America. And it's not necessarily profitable to sort of try to untangle all the different factors that went into it.

I don't think there's a lot of dispute for this. You can argue that we didn't get everything done that we wanted to get done, but I can make a really strong argument, and I think prove, that by almost every measure the country's better off now than when I started.

What we can be scientifically certain of is that our continued use of fossil fuels is pushing us to a point of no return

I don't want ever to be a president who is comfortable and at ease with killing people.

Peace is not just the absence of war. True peace depends upon creating the opportunity that makes life worth living. And to do that, we must confront the common enemies of human beings: nuclear weapons and poverty; ignorance and disease.

Rather take that moral sense and apply it to the particulars of a job that is going to test those ethical and moral precepts differently than if you're a professor, or a business person, or a dad. And if I were not comfortable with the judicious use of our military to protect the American people, than I shouldn't have run for president. And having said that, I do think that the wisdom of a [Martin Luther] King or a [Mahatma] Gandhi can inform my decisions.