The Republic by Plato Part 2 Page 17

Glaucon, when Adeimantus, his brother, interposed: Socrates, he said, you do not suppose that there is nothing more to be urged?

Why, what else is there? I answered.

The strongest point of all has not been even mentioned, he replied.

Well, then, according to the proverb, ‘Let brother help brother’ — if he fails in any part do you assist him; although I must confess that Glaucon has already said quite enough to lay me in the dust, and take from me the power of helping justice.

Nonsense, he replied.

But let me add something more: There is another side to Glaucon’s argument about the praise and censure of justice and injustice, which is equally required in order