SOCRATES: And if they know, they must agree together and not differ?
ALCIBIADES: Yes.
SOCRATES: And would you say that they knew the things about which they differ?
ALCIBIADES: No.
SOCRATES: Then how can they teach them?
ALCIBIADES: They cannot.
SOCRATES: Well, but do you imagine that the many would differ about the nature of wood and stone? are they not agreed if you ask them what they are? and do they not run to fetch the same thing, when they want a piece of wood or a stone? And so in similar cases, which I suspect to be pretty nearly all that you mean by speaking Greek.
ALCIBIADES: True.
SOCRATES: These, as we were saying, are matters about which they are agreed with one another and with themselves; both individuals and states use the same words about them; they do not use some one word and some another.
ALCIBIADES: They do not.