H. P. Grice's Set Theory

"the power of set theory".

This reminds me of A. G. N. Flew, in "Apologia pro philosophia mea" (S.
Shanker, ed, "Philosophy in Britain Today", p. 78).

Flew is recollecting J. L. Austin's "Saturday Mornings",

"described once", Flew goes on,

"by Paul Grice [his tutor, incidentally] as

"the class for all those
whose classes have no members"

"(See Warnock, "Saturday mornings", in I. Berlin et al,
"Essays on J.  L. Austin" (Clarendon, 1973)".
Or not.

I always found Grice's formulation rather brilliant.