The income effects in an economy always sum to zero.

There are several states that move from Karl Marx-like policies to Adam Smith-like policies and back again in a weekend. So for the states with huge volatility in their income tax policies over time, the differences in growth rates in those periods are really amazingly consistent with tax rates really mattering.

If you like the post office and the Department of Motor Vehicles and you think they're run well, just wait till you see Medicare, Medicaid and health care done by the government.

Sound money is the sine qua non of a prosperous society.

And just remember, every dollar we spend on outsourcing is spent on U.S. goods or invested back in the U.S. market. That's accounting.

You know, without China there is no Wal-Mart and without Wal-Mart there is no middle class and lower class prosperity in the United States.

People can also change the timing of when they earn and receive their income in response to government policies.