If there is one lesson for U.S. foreign policy from the past 10 years, it is surely that military intervention can seem simple but is in fact a complex affair with the potential for unintended consequences.

America's growth historically has been fueled mostly by investment, education, productivity, innovation and immigration. The one thing that doesn't seem to have anything to do with America's growth rate is a brutal work schedule.

My friends all say I'm going to be Secretary of State. But I don't see how that would be much different from the job I have now.

The tallest building in the world is now in Dubai, the biggest factory in the world is in China, the largest oil refinery is in India, the largest investment fund in the world is in Abu Dhabi, the largest Ferris wheel in the world is in Singapore.

If I'm president, there are going to be government vans that drive around and pick up people who shouldn't be wearing certain clothing. Talk about lack of civil rights - I'm sorry, I'm pulling you right off the street, and we're giving you clothes that you're going to be O.K. in.

I'm for limited government, so stay out of my guns, and you can stay out of my body as well.

Democracy will not come to Mexico as the result of supposedly optimal policies prescribed by self-appointed saviors bent on economic stabilization.

Democracy is like a totalitarian.