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say that of the Bs, if, and only if, every single A
can be placed in a relation to B to which no
other A stands in the same relation. But just as
to say that a body can easily be scratched is the
same as to say that it is soft, so to say that one thing
can be placed in relation to another thing is to say
that it already is in relation to that thing; and it
is simpler to say that the collection of the As is at
least as small as the collection of the Bs, if and only
if there is a relation in which every A stands to
a B to which no other A stands in the same relation.

[diagram]
There is a certain dyadic relation such that
if there is an A it stands in that relation to a B and
if there is any A and it stands in that same
relation to that same B then it is identical with that first A.

[marginal note bottom left:] The inner scroll might have left the A outside.
No! not so.