Paralleling the producers, warriors, and rulers in the city, Plato claims that each soul has three separate seats of desire and motivation:
1)The appetitive part of our soul lusts after food, drink(and after money, most of all)
2) The spirited part of the soul yearns for honor; and
3) The rational part of the soul desires truth and knowledge.
In a just soul, these three parts stand in the correct power relations. The rational part must rule, the spirited part must enforce the rational part’s convictions, and the appetitive part must obey.