The same is true in the case when people are indifferent to each other. The cases we must look for are those where the pathos involves people closely connected, for instance where brcther kilis brother, son father, mother son, or son mother or if not kills, then means to kill, or does some other act of the kind. Well, one cannot interfere with traditional stories, cannot, for instance, say that Clytaemnestra was not killed by Orestes or Eriphyle by Alcmaeon; what one should do is invent for oneself and use the traditional material well. Let me explain more clearly what I mean by well'. One can make the act be committed as the ancient poets did, that is, with the agents knowing and aware [whom they are damaging] even Euripides has the example of Medea killing her children with full knowledge. [And they can have knowledge and not act.] or they can commit the deed that rouses terror without knowing to whom they are doing it, and later recognize the connection, like Sophocles' Oedipus.