My belief is that nothing that can be expressed by mathematics cannot be expressed by careful use of literary words.

The parts of physics that are exact are the parts of physics that are exact. The parts that are inexact are vastly greater. Sensible scientists don't waste their time pushing against doors that endlessly will not give. They are opportunistic and go where they can, but there are pitfalls in that.

The Malthusian Theory - that mankind, for biological and sociological reasons, is so fertile, so fecund, that if you started out with the new continent and plenty of land for everybody, in several generations we would multiply our numbers.

When I was a kid, I reckoned things in Hershey bars. Is this worth three Hershey bars to me?

Actually, in my advanced, high-falutin' frontier economics, I often work with what I define as 'money metric utility,' and I ask people, 'Do you really want that? What are you willing to pay for that?'

A temporary reduction in tax rates on individual incomes can be a powerful weapon against recession.

U.S. capital formation, which has been pretty high in the '90s and very high in the late 1990s, is what is being financed by the savings of the rest of the world, generally poorer than ourselves, because our deficit on current account, chronic deficit, is their surplus, and they have been willingly bringing that to the American market.

I can't think of a president who has been overburdened by a knowledge of economics.

The history of the twentieth century - America's century! - has been pretty much a history of rising prices.

Things swept so badly that I had distrust - after 1967, let's say - of American Keynesianism. For better or worse, U.S. Keynesianism was so far ahead of where it started. I am a cafeteria Keynesian.