an appropriate count of it, given the problem of the economic definition of "copper," the possibility of using copper more efficiently, the possibility of creating copper or its economic equivalent from other materials, the possibility of recycling copper, or even obtaining copper from sources beyond planet Earth, and thus the lack of boundaries to the sources from which "copper" might be drawn.' Legacy The Institute for the Study of Labor established the annual Julian L. Simon Lecture to honor Simon's work in population economics. The University of Illinois at Urbana-Champaign held a symposium discussing Simon's work on April 24, 2002. The university also established the Julian Simon Memorial Faculty Scholar Endowment to fund an associate faculty member in the business school. India's Liberty Institute also holds a Julian Simon Memorial Lecture. The Competitive Enterprise Institute gives the Julian Simon Memorial Award annually to an economist in the vein of Simon; the first recipient was Stephen Moore, who had served as a research fellow under Simon in the 1980s. Personal life Simon was married to Rita James Simon, who was also a longtime member of the faculty at the University of Illinois at Urbana-Champaign and later became a public affairs professor at American University. Simon suffered for a long time from depression, which allowed him to work only a few productive hours in a day. He also studied psychology of depression and wrote a book on overcoming it. Simon was Jewish. He died of a heart attack at his home in Chevy Chase in 1998 at age 65. Education BA, Harvard University, experimental psychology, 1953 MBA, University of Chicago, 1959 PhD, University of Chicago, business economics, 1961 Honors Doctor honoris causa, University of Navarra, (Spain), Economics, 1998 Works The Resourceful Earth: A Response to "Global 2000" (1984), , Julian Simon & Herman Kahn, eds The Economic Consequences of Immigration into the United States Effort, Opportunity, and Wealth: Some Economics of the Human Spirit Good Mood: The New Psychology of Overcoming Depression (Forewords by Albert Ellis and Kenneth Colby) The Hoodwinking of a Nation (hard), (soft) A Life Against the Grain: The Autobiography of an Unconventional Economist Scarcity or Abundance? A Debate on the Environment (1994), (with Norman Myers), The Philosophy and Practice of Resampling Statistics Basic research methods in social sciences: The art of empirical investigation, Resampling: A Better Way to Teach (and Do) Statistics (with Peter C. Bruce) The Science