 In particular, Green links self-realization and a common good. He believes that full self-realization can take place only in a community of ends (PE §§183–84, 190–91, 199, 232) in which each person cares about others for their own sakes (PE §§199–200) and aims at a common good (PE §202, 236). But why? At one point, Green suggests that this concern for others, at least for those within one’s immediate circle, is given or natural.