What Do the Hellenistic Schools Bring to the Concept of Self?

What do the hellanistic schools then bring to the conception of self that we don't already find in plato and aristotle? Good let me just say a word about what i do think we find in plao and aristotle, because i think that tale tends to push the discussion in a certain direction. So am using the word so the web suqe er, this has been picked up by the e er modern philosopher michel fuco, in what he called with a rather literal translation of the plato care of the self.