Plato: The Republic

1. BOOK I (continued)

And when you want to keep a pruning-hook safe, then justice is useful to the individual and to the state; but when you want to use it, then the art of the vine-dresser?

Clearly.

And when you want to keep a shield or a lyre, and not to use them, you would say that justice is useful; but when you want to use them, then the art of the soldier or of the musician?

Certainly.

And so of all the other things;--justice is useful when they are useless, and useless when they are useful?

That is the inference.

Then justice is not good for much. But let us consider this further point: Is not he who can best strike a blow in a boxing match or in any kind of fighting best able to ward off a blow?

Certainly.

And he who is most skilful in preventing or escaping from a disease is best able to create one?

True.

And he is the best guard of a camp who is best able to steal a march upon the enemy?

Certainly.

Then he who is a good keeper of anything is also a good thief?

That, I suppose, is to be inferred.

Then if the just man is good at keeping money, he is good at stealing it.

That is implied in the argument.

Then after all the just man has turned out to be a thief. And this is a lesson which I suspect you must have learnt out of Homer; for he, speaking of Autolycus, the maternal grandfather of Odysseus, who is a favourite of his, affirms that