Keynes Severed the Evident Link Between Savings and Investment, Claiming the Two Are Unrelated

There is a subset of consumers, an eternal problem for mankind: the insufferably bourgeois savers, those who practice the solid puritan virtues of thrift and farsightedness, those whom Keynes, the would-be aristocrat, despised all of his life. All previous economists, certainly including Keynes’s forbears Smith, Ricardo, and Marshall, had lauded thrifty savers as building up long-term capital and therefore as responsible for enormous long-term improvements in consumers’ standard of living. But Keynes, in a feat of prestidigitation, severed the evident link between savings and investment, claiming instead that the two are unrelated.

In fact, he wrote, savings are a drag on the system; they “leak out” of the spending stream, thereby causing recession and unemployment. Hence Keynes, like Mandeville in the early eighteenth century, was able to condemn thrift and savings; he had finally gotten his revenge on the bourgeoisie.

By also severing interest returns from the price of time or from the real economy and by making it only a monetary phenomenon, Keynes was able to advocate, as a linchpin of his basic political program, the “euthanasia of the rentier” class: that is, the state’s expanding the quantity of money enough so as to drive down the rate of interest to zero, thereby at last wiping out the hated creditors. It should be noted that Keynes did not want to wipe out investment: on the contrary, he maintained that savings and investment were separate phenomena. Thus, he could advocate driving down the rate of the interest to zero as a means of maximizing investment while minimizing (if not eradicating) savings.

—Murray N. Rothbard, “Keynes’s Political Economy,” in The Rothbard Reader, ed. Joseph T. Salerno and Matthew McCaffrey (Auburn, AL: Mises Institute, 2016), 199-200.