In the thread you start, you should address one of the questions I asked in the audio:

Do you agree with Plato's conception of justice as harmony? Why/why not?

Do you agree with his claims about the three-part state and that there are those who just naturally fit best in those parts? Why/why not?

What in the world does he mean in the passage about the many beautiful and many good? What is his argument there, and what do you make of it?