SOCRATES: Heavens! Protarchus, that will be a tedious business, and just at present not at all an easy one. For in going to war in the cause of mind, who is aspiring to the second prize, I ought to have weapons of another make from those which I used before; some, however, of the old ones may do again. And must I then finish the argument?
PROTARCHUS: Of course you must.
SOCRATES: Let us be very careful in laying the foundation.
PROTARCHUS: What do you mean?
SOCRATES: Let us divide all existing things into two, or rather, if you do not object, into three classes.
PROTARCHUS: Upon what principle would you make the division?
SOCRATES: Let us take some of our newly-found notions.
PROTARCHUS: Which of them?
SOCRATES: Were we not saying that God revealed a finite element of existence, and also an infinite?
PROTARCHUS: Certainly.