Full Idea
Our very notion of a set is that of an extensional plurality limited in size.
Gist of Idea
Limitation of size is part of the very conception of a set
Source
John Mayberry (What Required for Foundation for Maths? [1994], p.415-2)
Book Reference
'Philosophy of Mathematics: anthology', ed/tr. Jacquette,Dale [Blackwell 2002], p.415