The Republic by Plato Part 4 Page 85

Exactly so.

And if the nature of justice and injustice be known, then the meaning of acting unjustly and being unjust, or, again, of acting justly, will also be perfectly clear?

What do you mean? he said.

Why, I said, they are like disease and health; being in the soul just what disease and health are in the body.

How so? he said.

Why, I said, that which is healthy causes health, and that which is unhealthy causes disease.

Yes.

And just actions cause justice, and unjust actions cause injustice?

That is certain.

And the creation of health is the