"Persona" title reflects the Latin word for "mask" and Carl Jung's theory of "persona", an external identity separate from the soul (""). Jung believed that people project public images to protect themselves, and can come to identify with their personae. An interviewer asked Bergman about the Jungian connotations of the film's title, acknowledging an alternative interpretation that it references persona masks worn by actors in ancient drama, but saying that Jung's concept "admirably" matched the film. Bergman agreed, saying that Jung's theory "fits well in this case". Coates also connected masks to themes of identity and duality: "The mask is Janus-faced".