Which social classes make up Plato’s ideal state?

In his dialogue The Republic, the Greek philosopher Plato outlines an ideal state composed of three distinct social classes. These classes are designed to mirror the three parts of the human soul—reason, spirit, and appetite—to achieve political justice through harmony.123

The three social classes are:

• Rulers: These are philosophers who possess knowledge of the form of the Good. Their role is to pursue the well-being of the entire state based on their wisdom and understanding of justice.12
• Guardians (or Soldiers): This class is responsible for the defense of the state. They are characterized by courage and are tasked with upholding the judgments and directives established by the rulers, even in the heat of battle.12
• Producers: This group includes farmers, craftsmen, and other workers. They provide the material needs of the society and are associated with the appetitive part of the soul.13

According to Plato, political justice is achieved when each class performs its specific role properly and does not attempt to interfere with the functions of the others.12