Life takes its own turns, makes its own demands, writes its own story, and along the way, we start to realize we are not the author.

Anybody who gets into bed and turns out the lights the first night in the White House probably feels a little bit of a start, where you say, "Goodness ... "

Get involved in an issue that you're passionate about. It almost doesn't matter what it is ... We give too much of our power away, to the professional politicians, to the lobbyists, to cynicism. And our democracy suffers as a result.

America can't provide health care to people who need it. We can't invest in science and technology, which will determine whether or not we are going to be competitive in the long term. There has never been a country on Earth that saw its economy decline and yet maintained its military superiority.

People of Berlin - people of the world - this is our moment. This is our time.

If it's on Facebook, it all looks the same.

In America, we want a peaceful planet. We want people to be able to enjoy their lives and know they're going to have a bright and prosperous future, not be at war. That's our purpose.