Philosophy 152 Philosophy of Human Nature Darwall Fall 1996 Plato IV I Three parts of the soul: A. Appetites B. Spirit (Emotion) C. Reason II Justice in the individual as each part performing its function: reason ruling, spirit supporting reason, and appetite prompting us toward satisfying physical needs. III Is Plato right that this is good in itself? IV Does this respond to Glaucon's challenge? V What about the following objection?: Yes, of course, it is good in itself to be guided by reason, but why suppose that reason directs us to do things that we usually consider just, e.g., keep promises, respect other people's rights, and so on? Couldn't reason direct us simply to pursue or own enlightened, long-term interest, regardless of whether that was just or not? VI Can you see some way that Plato could respond to this challenge?