Full Idea
If you imagine subtracting a book's sensory properties one by one, what is left of it?
Gist of Idea
If you gradually remove a book's sensory properties, what is left at the end?
Source
Robert Audi (Epistemology: contemporary introduction [1998], I p.42)
Book Reference
Audi,Robert: 'Epistemology: a contemporary introduction' [Routledge 1998], p.42