I think Barack Obama 'll talk about the actions that we've taken, not just since 9/11, but since Paris, to help keep the American people and American interests safe.

The values that we talked about, the values democracy and free speech and international norms and rule of law, respecting the ability of other countries to determine their own destiny and preserve their sovereignty and territorial integrity. Things are not something that we can set aside.

My hope is that's something [Donald Trump] is thinking about, because not only is the president of the United States somebody that the entire country looks to for direction but sets the agenda internationally in a lot of ways.

In a global economy where our economies and supply chains are deeply integrated, it's not even possible.

The most powerful political moments for me come when I feel like my actions are aligned with a certain truth. I can feel it. When I'm talking to a group and I'm saying something truthful, I can feel a power that comes out of those statements that is different than when I'm just being glib or clever.

The leaders we revere and the businesses that last are generally not the result of a narrow pursuit of popularity or personal advancement, but of devotion to some bigger purpose. That's the hallmark of real success. The other trapping of success might be the by product of this larger mission, but it can't be the central thing.

We've got to identify new strategies to use cleaner energy, because that is a recipe for reducing the overall amount of pollution that's out there.