My fellow Americans, we are and always will be a nation of immigrants. We were strangers once, too.

The challenge there is that ISIL doesn't have an air force, so the damage done there is not against ISIL, it's against the Syrian regime.

The greatest threat to U.S. and global security is no longer a nuclear exchange between nations, but nuclear terrorism by violent extremists and nuclear proliferation to an increasing number of states.

One of the great things about the United States is that when it comes to world affairs, the president obviously is the leader of the Executive Branch, the Commander-in-Chief, the spokesperson for the nation, but the influence and the work that we have is the result not just of the president, it is the result of countless interactions and arrangements and relationships between our military and other militaries, and our diplomats and other diplomats, the intelligence officers and development workers.

There is a wonderful book called "Gandhi's Truth," by Erik Erikson, the psychologist. It is a great book. And I remember reading that and thinking about this connection between what we think in our personal lives and how that manifests itself in our politics. Those are two books, just off the top, that I think are sort of representative of reading that I did at that time. I never get a chance to read anymore.

I bowled a 129... It was like the Special Olympics or something!

That is another theme in the book [Dreams from My Father]. How do we exercise more empathy in our public discourse? How do we get the black to see through the eyes of the white? Or the citizen to see through the eyes of the immigrant? Or the straight to see through the eyes of the gay? That has always been a struggle in our politics.