These four cardinal virtues are not the only virtues, but they are the cardes, the (self-control, temperance) – come not just from Plato or Greek philosophy.
The four virtues get a significant amount of attention from Plato in Book 4 of the Republic, and also in the Symposium. Aristotle addresses them.
Plato's four cardinal virtues are prudence, justice, temperance and courage. changed the way philosophy was perceived and practiced in the Western world.