Historically - when you look at how America has evolved, typically we make progress on race relations in fits and starts. We make some progress, and then there's maybe some slippage.

I know starting careers in troubled times is a challenge, but it is also a privilege. Because it's moments like these that force us to try harder, dig deeper and to discover gifts we never knew we had. To find the greatness that lies within each of us. So don't ever shy away from that endeavor. Don't stop adding to your body of work. I can promise that you will be the better for that continued effort as will be this nation that we all love.

Progressives should recognize common morality with religion.

Part of the reason that our politics seems so tough right now and facts and science and argument does not seem to be winning the day all the time is because we're hardwired not to always think clearly when we're scared. And the country's scared.

I'm kind of a night owl.

The United States of America has helped underwrite the global security for more than six decades with the blood of our citizens and the strength of our arms. The service and sacrifice of our men and women in uniform has promoted peace and prosperity from Germany to Korea and enabled democracy to take hold in places like the Balkans.

It's up to [Angela Merkel] whether she wants to stand again and then ultimately, it'll be up to the German people to decide what the future holds. If I were here and I were German and I had a vote, I might support her.