With the exception of the Romani, these "Mercurian peoples" have all enjoyed great socioeconomic success relative to the average among their hosts, and have all, without exception, attracted hostility and resentment. A recurring pattern of the relationship between Apollonians and Mercurian people is that the social representation of each group by the other is symmetrical, for instance Mercurians see Apollonians as brutes while Apollonians see Mercurians as effeminate. Mercurians develop a culture of "purity" and "national myths" to cultivate their separation from the Apollonians, which allows them to provide international services (intermediaries, diplomacy) or services that are taboo for the local Apollonian culture (linked to death, magic, sexuality or banking).