"Among foragers, where property is shared, poverty tends to be a nonissue. In his classic book Stone Age Economics, anthropologist Marshall Sahlins explains that "the world's most primitive people have few possessions, but they are not poor. Poverty is not a certain small amount of goods, nor is it just a relation between means and ends; above all it is a relation between people. Poverty is a social status. As such it is the invention of civilization."20 Socrates made the same point 2,400 years ago: "He is richest who is content with least, for contentment is the wealth of nature."