The Republic by Plato Part 5 Page 4

argument are you raising about the State! Just as I thought that I had finished, and was only too glad that I had laid this question to sleep, and was reflecting how fortunate I was in your acceptance of what I then said, you ask me to begin again at the very foundation, ignorant of what a hornet’s nest of words you are stirring.

Now I foresaw this gathering trouble, and avoided it.

For what purpose do you conceive that we have come here, said Thrasymachus, — to look for gold, or to hear discourse?

Yes, but discourse should have a limit.

Yes, Socrates, said Glaucon, and the whole of life is the only limit which wise men assign to the hearing of such discourses. But never mind about us; take heart yourself