A lot of countries have advanced capabilities. And given the vulnerabilities of our infrastructure and our economies to digital platforms, we have to be careful in making sure that this doesn't become a lawless, low-level battlefield.

But at a time when our discourse has become so sharply polarized - at a time when we are far too eager to lay the blame for all that ails the world at the feet of those who think differently than we do - it's important for us to pause for a moment and make sure that we are talking with each other in a way that heals, not a way that wounds.

Together we resolve that a great nation must care for the vulnerable and protect its people from life's worst hazards and misfortune.

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

Lobbyist influence comes from access, not money.

When I was in Washington, I would usually get home from the Capitol at about 7:30 or 8, and I would try to write as much as possible. It was almost all in the wee hours.

Sustaining the energy and focus involved in doing a good job I think starts to gets tougher the longer you do it.