GORGIAS: Yes.

SOCRATES: And to understand that about which they speak?

GORGIAS: Of course.

SOCRATES: But does not the art of medicine, which we were just now
mentioning, also make men able to understand and speak about the sick?

GORGIAS: Certainly.

SOCRATES: Then medicine also treats of discourse?

GORGIAS: Yes.

SOCRATES: Of discourse concerning diseases?

GORGIAS: Just so.

SOCRATES: And does not gymnastic also treat of discourse concerning the
good or evil condition of the body?

GORGIAS: Very true.

SOCRATES: And the same, Gorgias, is true of the other arts:--all of them
treat of discourse concerning the subjects with which they severally have
to do.

GORGIAS: Clearly.