Ariel Wilkis is a researcher at the National Council of Scientific and Technological Research and a full professor in and the dean of the Interdisciplinary School of Advanced Social Studies at San Martin University, Argentina. He has published several books and articles about the sociology and anthropology of money, including The Moral Power of Money: Morality and Economy in the Life of the Poor. Mariana Luzzi is a researcher at the National Council of Scientific and Technological Research and an associate professor of sociology in the Interdisciplinary School of Advanced Social Studies at San Martin University, Argentina. She has published several books and articles on the sociology of money.