I make no apologies for us wanting to do this [bombing Iraq and Syria] appropriately and in a way that is consistent with American values.

On the spectrum of successful politicians, I'm not introverted the way some have been.

The United States has been enriched by Muslim Americans. Many other Americans have Muslims in their families or have lived in a Muslim-majority country - I know, because I am one of them.

We have reaffirmed again and again that the United States is not and never will be at war with Islam. Islam teaches peace, and when it comes to America and Islam, there is no us and them, there's only us, because millions of Muslim Americans are part of the fabric of our country. So, we reject any suggestion of a clash of civilizations.

There are a lot of very religious scientists around. I think the problem here is that in our school systems, and to some degree - and this is where it is relevant - with school boards around the country that are mandating curriculums and textbooks, you start seeing this weird watering down of scientific fact so that our kids are growing up in an environment - and this connects to what I was saying earlier abou the media - where everything's contested. Where nothing is true.

It's the idea held by generations of citizens who believed that America is a constant work in progress; who believed that loving this country requires more than singing its praises or avoiding uncomfortable truths. It requires the occasional disruption, the willingness to speak out for what's right, and shake up the status quo.

We forget now, but during his life, Dr. King wasn't always considered a unifying figure. Even after rising to prominence, even after winning the Nobel Peace Prize, Dr. King was vilified by many, denounced as a rabble rouser and an agitator, a communist and a radical. He was even attacked by his own people, by those who felt he was going too fast or those who felt he was going too slow; by those who felt he shouldn't meddle in issues like the Vietnam War or the rights of union workers.