“I am constantly asked what we are going to do with the [Nobel economics] prize money – $1.2 million before Uncle Sam takes his very large bite. The answer to that is a simple lesson in economics. Wants always expand to take advantage of new opportunities, which explains why consumers in rich countries feel no more satiated than do those in poor countries. My wife and I won’t have the slightest difficulty spending the prize money.”
Gary Becker in Business Week November 2 1992 [but if so then the marginal utility of new income is zero which surely is not true]