Each generation of Americans must define what it means to be an American.

A man is more than the sum of all the things he can do.

We have the most religious freedom of any country in the world, including the freedom not to believe.

Only astrophysicists new about the Internet 20 years ago. Today my cat has a website.

Climate change is more remote than terror but a more profound threat to the future of the children and the grandchildren and the great-grandchildren I hope all of you have.

The ideals that bind us together are as old as our nation, but so are the forces that pull us apart.

I did attempt to find out if there were any secret government documents that revealed things. If there were, they were concealed from me too. And if there were, well I wouldn't be the first American president that underlings have lied to, or that career bureaucrats have waited out. But there may be some career person sitting around somewhere, hiding these dark secrets, even from elected presidents. But if so, they successfully eluded me...and I'm almost embarrassed to tell you I did (chuckling) try to find out.