[316c]
but when I reflect that we are continually changing our laws in all sorts of ways, I cannot bring myself to assent.
Socrates
Perhaps it is because you do not reflect that when we change our pieces at draughts they are the same pieces. But look at it, as I do, in this way. Have you in your time come across a treatise on healing the sick?
Companion
I have.
Socrates
Then do you know to what art such a treatise belongs?
Companion
I do: medicine.
Socrates
And you give the name of doctors to those who have knowledge of these matters?
Companion
Yes.