エゴとは何？
Ethical egoism contrasts with ethical altruism, which holds that moral agents have an obligation to help others. Egoism and altruism both contrast with ethical utilitarianism, which holds that a moral agent should treat one's self (also known as the subject) with no higher regard than one has for others (as egoism does, by elevating self-interests and "the self" to a status not granted to others). But it also holds that one should not (as altruism does) sacrifice one's own interests to help others' interests, so long as one's own interests (i.e. one's own desires or well-being) are substantially equivalent to the others' interests and well-being. Egoism, utilitarianism, and altruism are all forms of consequentialism, but egoism and altruism contrast with utilitarianism, in that egoism and altruism are both agent-focused forms of consequentialism (i.e. subject-focused or subjective). However, utilitarianism is held to be agent-neutral (i.e. objective and impartial): it does not treat the subject's (i.e. the self's, i.e. the moral "agent's") own interests as being more or less important than the interests, desires, or well-being of others.
elevating self-interests