Part of what we have to do a better job of, if our democracy is to function in a complicated diverse society like this, is to teach our kids enough critical thinking to be able to sort out what is true and what is false, what is contestable and what is incontestable. And we seem to have trouble with that. And our political system doesn't help.

I learned to slip back and forth between my black and white worlds. One of those tricks I had learned: People were satisfied so long as you were courteous and smiled and made no sudden moves. They were more than satisfied; they were relieved -- such a pleasant surprise to find a well-mannered young black man who didn't seem angry all the time.

The problem was, and we saw some of this in the immigration-reform issues as well, was they hadn't done sufficient homework to know that I didn't have all the capacity they thought I did in order to just execute this through the stroke of a pen.

That's part of what I tried to describe to my team and supporters after the election, there was a lot of disappointment.

Our enemies are also seeking the abilities to sabotage our power grid, our financial institutions, our air traffic control systems.

The American story has never been about things coming easy. It has been about rising to the moment when the moment is hard. About rejecting panicked division for purposeful unity. About seeing a mountaintop from the deepest valley. That is why we remember that some of the most famous words ever spoken by an American came from a president who took office in a time of turmoil: "The only thing we have to fear is fear itself.

Like Joe Biden and so many other Americans, I've lost people I love deeply to cancer. I've heard often from those whose loved ones are suffering from Alzheimer's, addiction, and other debilitating diseases. Their heartbreak is real, and so we have a responsibility to respond with real solutions.