Vivian Walsh is a Distinguished Visiting Scholar in Economics and Philosophy at Muhlenberg College who has been writing about the unacknowledged ethical foundations of economics for more than half a century. A graduate University College, Dublin, where he received first class honors in economics and political science and went on to earn a Ph.D. in economics and in philosophy in 1957, he was appointed to joint positions in the department of economics and in the department of philosophy, logic, and scientific method at the London School of Economics the next year. A Nuffield Foundation Fellowship allowed him to travel to the United States in 1955, and over the next several years, he taught at Columbia University and then at the University of Buffalo. In 1967, he was appointed associate professor of economics at Sir George Williams University in Montreal. He moved on to the University of Washington in Seattle as a visiting scholar in 1968 and, in 1971, accepted an appointment as a professor of economics at the University of Waterloo in Ontario, Canada. He became a visiting professor in the Graduate Faculty of the New School for Social Research for six years and then professor of economics at the University of Denver in 1980. He went to the University of Tulsa as a distinguished visiting professor of philosophy and economics in 1986, to Guilford College as a visiting professor in 1988, and to Muhlenberg as a visiting distinguished lecturer in 1989, a post he held until being named to his present position in 2003. In addition to numerous papers published in academic journals, Dr. Walsh is the author of four books, Scarcity and Evil (1961), Introduction to Contemporary Microeconomics (1970), (with Harvey Gram) Classical and Neoclassical Theories of General Equilibrium: Historical and Mathematical Structure (1980), and, most recently, Relationality, Allocation, and Reproduction, which was published by Clarendon Press, Oxford, in 1996 and examines the limitations of the various formulations and interpretations of the concept of rationality that have been developed by economic theorists. He is currently working with Hilary Putnam on a series of papers on issues in metaethics and philosophy of science, particularly as they bear on economics.