The warrior class responsible for the city’s defense and security.

Most people are like prisoners in a cave, seeing only shadows (false realities).

To define justice on a larger scale, Plato describes a hypothetical city divided into three distinct classes, each corresponding to a part of the human soul:

The philosopher is the one who breaks free, exits the cave, and sees the sun (the truth).

Farmers, artisans, and merchants who provide for the city's physical needs.