The auditor in Plato's "The Republic"

In the year 2003 I have been employed for a few months by AXA Sim, an Italian branch of the French group AXA. I was an auditor, and so I decided to trace the first definitions of auditing in literature and philosophy.
It seems to me that Plato in "The Republic" was the first philosopher to describe auditing as we define it today.
In his state, the "guardians" ensure the survival of the state, and are motivated by their knowledge that their luck depends on common good.
In the pdf file attached below I have pasted a few paragraphs of "The Republic" where the figure of the guardian/auditor is described.
By the way, the famous Latin phrase "quis custodiet ipsos custodes?" (who will guard the guardians themselves?) does not come from Plato, but is to be found in Juvenal's VI satura.
To whoever may concern, despite being such a brilliant scholar my contract was not renewed.
As I said, this file is a pdf, so Acrobat Reader is neeeded.

The auditor in Plato's "The Republic"