part and a class could still be made somewhat plainer.

STRANGER: O Socrates, best of men, you are imposing upon me a very

difficult task. We have already digressed further from our original

intention than we ought, and you would have us wander still further

away. But we must now return to our subject; and hereafter, when there

is a leisure hour, we will follow up the other track; at the same time,

I wish you to guard against imagining that you ever heard me declare--

YOUNG SOCRATES: What?

STRANGER: That a class and a part are distinct.

YOUNG SOCRATES: What did I hear, then?

STRANGER: That a class is necessarily a part, but there is no similar

necessity that a part should be a class; that is the view which I should

always wish you to attribute to me, Socrates.

YOUNG SOCRATES: So be it.

STRANGER: There is another thing which I should like to know.

YOUNG SOCRATES: What is it?

STRANGER: The point at which we digressed; for, if I am not mistaken,

Statesman