John Maynard Keynes, so focused on the short- to medium-term that he left us the phrase "in the long run we shall all be dead," spoke at least once about the long term. It was in 1930 at a lecture at the Ateneo de Madrid. In the midst of an economy in deep depression and suffering from "a severe attack of economic pessimism," he expressed surprisingly optimism about the "economic possibilities of our grandchildren" (the title of the lecture). He said: "We are suffering, not from the rheumatism of old age, but from the growing pains generated by very rapid change." The expression "technological unemployment" is introduced in this lecture. Keynes concludes by adding (I paraphrase) that "the rate at which we shall arrive at plenitude (bliss) economic will depend on our ability to control demographics, our determination to avoid wars and civil strife, and our faith in science."