1. Michael E. Ross, “An Inventor's Lifelong Heeling Process: Heelys Are the Latest in Mobility,” MSNBC.com, April 27, 2004, http://www.msnbc.msn.com/id/4354874/; “Skate Shoe Company Moves Along,” http://bizjournals.com/dallas/sto- ries/2005/02/28/story6.html; Bruce Freeman, “Sitting Back on Your Heels,” ProLine Communications, Inc., http://prolinepr.com/html/adams.htm.
2. “Hot Growth Companies,” BusinessWeek, June 4, 2007. By August 2007, Heelys, Inc.'s stock had slipped. As a Dallas eighth-grader described the situation: “They're old,” quoted in “Can Heelys Regain Momentum?” Wall Street Journal, August 21, 2007.
3. Adam Smith, An Inquiry into the Nature and Causes of the Wealth of Nations, eds. R. H. Campbell and A. S. Skinner, 2 vols. (Indianapolis, IN: Liberty Classics, 1981).
4. Robert Heilbroner, with the assistance of Laurence J. Malone, The Essential Adam Smith (New York and London: W. W. Norton, 1986), 169.
5. Heilbroner, The Essential Adam Smith, 170.
6. Ibid., 168.
7. Recent assessments of the Catholic Church's position on “just price” appear in Robert B. Ekelund, Jr., et al., Sacred Trust: The Medieval Church as an Economic Firm (New York: Oxford University Press, 1996).
8. Frank H. Knight, Risk, Uncertainty, and Profit (New York: Augustus M. Kelly, 1964 ), 363. Knight's italics.
9. Information about richest Americans is from “Forbes 400: The 400 Richest Americans,” Forbes.com, http://www.forbes.com/lists/2006/54/biz_06rich400_ The-400-Richest-Americans_land.html.
10. Say's theories can be found in Henry W. Spiegel, The Growth of Economic Thought (New York: Prentice-Hall, 1971), 260, and in C. Joseph Pusateri,
A History of American Business, 2d ed. (Arlington Heights, IL: Harlan-Davidson, 1988), 6–7.
11. Jonathan R. T Hughes, The Vital Few: The Entrepreneurs and American Economic Progress, 2d ed. (New York: Oxford University Press, 1986).