Could use some help with this question
Which part of the soul (and the city) discovers what is right and what is wrong? How is the judgment of this part of the soul related to the other parts when we act justly? How is it related to them when we act unjustly?
The relevant part for answering this is Book IV, especially 442 - 444. It is the rational part that discriminates between right and wrong. In the just soul, ...