The fact that there are multiple “me”s in every person is not a sign of derangement but the way things are. The ways one performs one's selves are connected to the ways people perform others in dramas, dances, and rituals. In fact, if people did not ordinarily come into contact with their multiple selves, the art of acting and the experience of possession trance would not be possible. 

Richard Schechner, 'What is Performance?' in Performance studies: An Introduction