Now, at times this issue has tended to degenerate into an 'either-or' type of debate. Either we protect our people from terror or we protect our most cherished principles. But that is a false choice. It asks too little of us and assumes too little about America.

As I reflect back on what's worked for me in this [presidential] office it's been that I've gotten people who maybe didn't believe in the process to get engaged. Ironically, I've even gotten the other side that maybe didn't believe in the process to get engaged.

After all, there were thousands of so-called campus radicals, most of them white and tenured and happily tolerated. No, it remained necessary to prove which side you were on, to show your loyalty to the black masses, to strike out and name names.

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.

We all know a lot of people who died in 9/11, the World Trade Center. A lot of money funding that mission is directly tied - from the 9/11 Commission, directly tied to Iran, Hezbollah, Hamas.

Do not tell me that we're not drilling. We're drilling all over this country. I mean, I guess there's some - there are a few spots where we're not drilling. We're not drilling in the national mall. We're not drilling at your house. I guess we could try to have like, you know, 200 oil rigs in the middle of Chesapeake Bay.

I'm suspicious of too much certainty in the pursuit of understanding just because I think people are limited in their understanding.