The Republic by Plato Part 6 Page 29

aware, these new Sophists and educators, who are the public, apply when their words are powerless.

Indeed they do; and in right good earnest.

Now what opinion of any other Sophist, or of any private person, can be expected to overcome in such an unequal contest?

None, he replied.

No, indeed, I said, even to make the attempt is a great piece of folly; there neither is, nor has been, nor is ever likely to be, any different type of character which has had no other training in virtue but that which is supplied by public opinion — I speak, my friend, of human virtue only; what is more than human, as the proverb says, is not included: for I would not have you ignorant that, in the present evil state of governments,