Theatre, in which actors take on changing roles, has among its many functions the examination of identity. For the individual, theatre is a kind of identity laboratory in which social roles can be examined vicariously.
Richard HornbyOur everyday self is a narrow construct...Our total self is far broader, ultimately infinite. Actors who seem to be playing themselves are actually playing roles they have become so skillful at that they seem pure and natural...Much bad Acting is the result of being too close to the Actor's everyday self, confining him in its rigid mold.
Richard Hornby