It is precisely the essential feature of egoism that it does not apprehend the full value of the isolated self. The egoist sees himself only with regard to the others, as a member of society who wishes to possess and acquire more than the others. Self-directedness or other-directedness have no essential bearing on the specific quality of love or hatred. These acts are different in themselves, quite independently of their direction

L. Coser, trans. (1961), p. 96 - Das Ressentiment im Aufbau der Moralen (1912)