How do you become a Guardian according to Plato?

In Plato's "Republic," Guardians are philosopher-kings who have undergone rigorous intellectual and moral education through the study of mathematics, dialectics, and philosophy. They are selected based on their natural aptitude and inclination towards wisdom and virtue, rather than through birth or social status. The process of becoming a Guardian involves cultivating a rational and just soul that prioritizes the well-being of the entire community over individual desires.