We have to all shoulder the responsibility for keeping the planet habitable, or we're going to suffer the consequences - together.

The president [Barack Obama] laid out his vision for foreign policy in a way that we hadn't heard before. And it could be summed up, I think, in two words - realistic idealism.

The law is a powerful thing but the law doesn't always change what's in people's hearts. And so all of us have an obligation to think about how we're treating other people.

It's only when you hitch your wagon to something larger than yourself that you realize your true potential.

Here at home, we will strengthen our defenses but not succumb to a siege mentality that sacrifices the open society and liberties and values that we cherish as Americans, because great and proud nations don't hunker down and hide behind walls of suspicion and mistrust.

I'm personally very grateful to my many friends in the Greek-American community, sons and daughters of Greece who have found success in every walk of American life.

There are gonna be elections coming up among our NATO allies that we have to pay attention to. I anticipate that this kind of thing can happen again here. And so in addition to the report assessing what exactly happened, what we have also done is to make sure that the Department of Homeland Security and our intelligence teams are working with the various folks who run our elections.