Narcissism is a factor in trait theory used in various self-report inventories of personality such as the Millon Clinical Multiaxial Inventory. It is one of the three dark triadic personality traits (the others being psychopathy and Machiavellianism). Except in the sense of primary narcissism or healthy self-love, narcissism is usually considered a problem in a person's or group's relationships with self and others. Narcissism is not the same as egocentrism. The term "narcissism" comes from the Greek myth about Narcissus (, ""), a handsome Greek youth who, according to Ovid, rejected the desperate advances of the nymph Echo. This caused Narcissus
Egeria (mythology) identified with figures like Atys or Hippolyte, because of the Diana reference (see Frazer). Described sometime as a "mountain nymph" (Plutarch), she is usually regarded as a water nymph and somehow her cult also involved some link with childbirth, like the Greek goddess Ilithyia. But most of all, Egeria gave wisdom and prophecy in return for libations of water or milk at her sacred groves. This quality has been made especially popular through the tale of her relationship with Numa Pompilius (the second legendary king of Rome, who succeeded its founder Romulus). According to mythology she counseled and guided the