We have a freer world because of the collapse of the Soviet Union and the changes in China. Those two have been the main contributors to freedom in our time.

If you put the federal government in charge of the Sahara Desert, in 5 years there'd be a shortage of sand.

The stock market crashed in October 1929. But that was not the cause of what caused the Great Depression. It was, in my opinion, a very minor element of it. What happened was that from 1929 to 1933 you had a major contraction which, in my opinion, was caused primarily by the failure of the Federal Reserve System, to follow the course of action for which it was set up. It was set up to prevent exactly what happened from 1929 to 1933. But instead of preventing it, they facilitated it.

Even the most ardent environmentalist doesn't really want to stop pollution. If he thinks about it, and doesn't just talk about it, he wants to have the right amount of pollution. We can't really afford to eliminate it - not without abandoning all the benefits of technology that we not only enjoy but on which we depend.

But on the other hand, if you come under circumstances where each person is entitled to a pro-rata share of the pot, to take an extreme example, or even to a low level of the pie, than the effect of that situation is that free immigration, would mean a reduction of everybody to the same, uniform level. Of course, I'm exaggerating, it wouldn't go quite that far, but it would go in that direction. And it is that perception, that leads people to adopt what at first seems like inconsistent values.

We had much freer trade in the 19th century. We have much less globalization now than we did then.

That's an interesting paradox to think about. Make it legal and it's no good. Why? Because as long as it's illegal the people who come in do not qualify for welfare, they don't qualify for social security, they don't qualify for the other myriad of benefits that we pour out from our left pocket to our right pocket. So long as they don't qualify they migrate to jobs. They take jobs that most residents of this country are unwilling to take. They provide employers with the kind of workers that they cannot get. They're hard workers, they're good workers, and they are clearly better off.