Here: “Part of America’s current prosperity is based not on genuine gains in income, nor on high productivity growth, but on borrowing from the future. The words of Ludwig von Mises, an Austrian economist of the early 20th century, nicely sum up the illusion: “It may sometimes be expedient for a man to heat the stove with his furniture. But he should not delude himself by believing that he has discovered a wonderful new method of heating his premises.”