To the free man, the country is the collection of individuals who compose it, not something over and above them. He is proud of a common heritage and… - Milton Friedman

Adam Smith’s key insight was that both parties to an exchange can benefit and that, so long as cooperation is strictly voluntary, no exchange will take place unless both parties do benefit.

Keynes was a great economist. In every discipline, progress comes from people who make hypotheses, most of which turn out to be wrong, but all of which ultimately point to the right answer. Now Keynes, in The General Theory of Employment, Interest and Money,set forth a hypothesis which was a beautiful one, and it really altered the shape of economics. But it turned out that it was a wrong hypothesis. That doesn't mean that he wasn't a great man!

In fiscal policy as in monetary policy, all political considerations aside, we simply do not know enough to be able to use deliberate changes in taxation or expenditures as a sensitive stabilizing mechanism.