The Republic by Plato
The Republic by Plato Seeing then, I said, that there are three distinct classes, any meddling of one with another, or the change of one into another, is the greatest harm to the State, and may be most justly termed evil-doing?
Precisely.
And the greatest degree of evil-doing to one's own city would be termed by you injustice?
Certainly.
This then is injustice; and on the other hand when the trader, the auxiliary, and the guardian each do their own business, that is justice, and will make the city just.
I agree with you.