“…One cannot just use this name off-hand to mean something different, at least if one believes that economics and ethics are social sciences rather than pure (second rate) mathematics. This is all the more confusing because another field of economics studies envy and its consequences by modelling it as a negative externality (Duesenberry, 1949;Mishan, 1960;Kolm, 1966Kolm, , 1972Kolm, , 1990Kolm, , 1991cKolm, and 1995aScott, 1972;Brennan, 1973;Hirschman, 1973;Boskin and Sheshinski, 1978;Goldman and Sussangkam, 1983;Villar, 1988;Nieto, 1991, and others). Now, it is not the case that, as Arnsperger says, at some point I reacted to the name 'envy' and wanted to replace it by something else2.…”