 It is standard in normative economics, as in political philosophy, to evaluate individual well-being on the basis of self-centered preferences, utility or advantage. Feelings of altruism, jealousy, etc. are ignored in order not to make the allocation of resources depend on the contingent distribution of benevolent and malevolent feelings among the population (see e.g. Goodin 1986, Harsanyi 1977). It may be worth mentioning here that the no-envy criterion discussed above has nothing to do with interpersonal feelings, since it is defined only with self-centered preferences. When an individual “envies” another in this particular sense, he simply prefers the other’s consumption to his own, but no feeling is involved (he might even not be aware of the existence of the other individual).