Farmers, craftsmen, traders. Myth of the Cave . Must come back down to take responsibility as guardian. Then 15 years service as guardian. The philosophical activity with breaks for political duties.
Ideal ruler is philosopher-king.
All governed by the Fates who control the Spindles of Necessity. Now place for reward and punishment. Very influential in later religious thought. More scientific and based in nature and observation. Denied Plato's theory of Ideas.