In book 9 of the Republic, Plato offers several arguments for the conclusion that a life of injustice is the most wretched life of all (or, as I put it in class, that justice is its own reward). Present and explain what you take to be the best argument. (This will involve explaining what Plato takes justice to be, among other things.) Then evaluate that argument. Finally, in your view, is justice its own reward? Defend your view by offering an argument in favor of it, and then defend that argument.