In Book I of Plato's Republic, Thrasymachus...

In Book I of Plato's Republic, Thrasymachus offers two long speeches on what justice is (or, more broadly, morality), and many have wondered whether he holds a single, coherent view, and if so, just what it is. 

(1) Briefly summarize what you take to be his central claims in each speech, quoting and citing the relevant passages to make your points and explaining how you understand them. 

(2) Do you agree with any/all of his position(s) about what is just (or moral)? Why or why not? Explain your view fully.

(3) What is the best objection that can be made against your position and how would you respond to it? Does your position need to be modified, or can you answer the objection decisively? Explain your answer fully.