In the assigned reading I came across a statement: "[W]henever a human being begins to discover how he is playing a role and how he can be an actor, he becomes an actor" (The Gay Science §356, 303). My interpretation: when a person discovers what his or her role is in society -- or what people assume is his or her role -- he or she can then be a so-called actor and act as society expects him or her to act by changing his or her personality and his or her behavior. This is my interpretation of this statement. I would like to know other people's opinions too.
[Very lightly edited to enhance readability -TT]