Most people won't have opportunity to do full-time service, but those lucky enough to have monetary wealth or some spare time really can make an enormous difference. As someone who's now in the public sector, and is seeing up-close-and-personal the real impact of what we do and what we give, I can tell you: every dollar and every volunteer help, in more ways than you can count.

Jeb Bush is very good on immigration, he's very good on education. He's a smart guy.

Buy what's deliverable, not what could be.

When I care about something, I care about something. I think I have an obligation as an American to - and as a citizen, as - as a human being, to help others. Smoking is going to kill a billion people this century. I've put six hundred million dollars from my own money into trying to stop the tobacco companies from getting kids to smoke and convincing adults that it's not in their health.

To a contrarian like me, constant advice not to do something almost always starts me quickly down the risky, unpopular path.

Canada sets aside 36 percent of their visas for people with skills they think their country needs. We set aside six percent. We educate the doctors, and then don't give 'em a green card.

The people who are worried about privacy have a legitimate worry. But we live in a complex world where you're going to have to have a level of security greater than you did back in the olden days, if you will. And our laws and our interpretation of the Constitution, I think, have to change.