C. Lowell Harriss, a professor of economics at Columbia, describes economics as the study of the allocation of scarce goods and services. In market economies, this is determined by [[supply and demand]].<ref>[https://www.nytimes.com/2008/07/13/business/13every.html?em&ex=1216440000&en=a9a6d3e97f11545f&ei=5087%0A Lessons in Love, by Way of Economics]</ref> | C. Lowell Harriss, a professor of economics at Columbia, describes economics as the study of the allocation of scarce goods and services. In market economies, this is determined by [[supply and demand]].<ref>[https://www.nytimes.com/2008/07/13/business/13every.html?em&ex=1216440000&en=a9a6d3e97f11545f&ei=5087%0A Lessons in Love, by Way of Economics]</ref> |