Remember that movie Independence Day, where invaders were coming from outer space and the whole world was united against the invasion? Why can't we be united on behalf of our planet? And that's what I want to do.

Like the railroads that brought us together in the 19th century, these trails will bring us together in the 20th and 21st centuries. (at launch of the National Millennium Trails Program, 1999)

I want us to heal America and bring it together because that's, I think, the best way for us to get the future that our children and our grandchildren deserve.

[On the Chicago Cubs:] Being a Cubs fan prepares you for life - and Washington.

I want to be the best president I can be for every American.

Whether you call it radical jihadism or radical Islamism, I think they mean the same thing. I'm happy to say either.

I think what President [Barack] Obama has done is to chart a steady course. When I was there, the first four years we had a lot of cleanup to do. We inherited a lot of bad feelings from the [George W.] Bush administration, and much of what I spent my time doing was traveling around the world reassuring friends and allies.