The golden mean for knowing virtue can be found to be essentially about finding the middle ground.
Explanation:
The golden mean method was devised by Aristotle that anything that falls in the middle of two extremes can be said to be ideal and is a paragon of virtue and good faith.
It ignores the two extremes and maintains complete balance.
To devise the center of the phenomenon he had devised certain formulas which culminated into his golden mean method.
This method was also used qualitatively however where the measure for the virtue of a person was also done through the guidelines laid down by him.
