Re: Undefined terms
Benjamin Price Shults (firstname.lastname@example.org)
Mon, 22 May 1995 15:32:07 -0500
I see now that Harrison's  means the same thing that I intended my
 to mean. I'm sorry I complicated things unnecessarily.
Bernays called Harrison's "something": "the empty set" and
Morse-Kelley called it: "the universe".