The work is carried out to analyze the relationship of acting as mimesis and acting as an expression. Performing arts to the twentieth century were relied on performance as mimesis, regarding the practice of mimicking and generating (pre)configured content of the external world. Mimetic acting was relied on the interpretation of the character and the given expression that was created an interpreter from the actor. Acting discipline in the second half of the twentieth century was based on the expressive artistic procedure. Unlike acting as mimesis, expressive acting examines the biological and cultural human behavior in a concrete situation: the actor becomes the creator of theatrical situations. Reference frames o...