Full Idea
We could think of 'substance' on the model of a mass noun, rather than a count noun.
Gist of Idea
Maybe 'substance' is more of a mass-noun than a count-noun
Source
Cover,J/O'Leary-Hawthorne,J (Substance and Individuation in Leibniz [1999], 7.3)
Book Reference
Cover,J/O'Leary-Hawthorne,J: 'Substance and Individuation in Leibniz' [CUP 1999], p.269
A Reaction
They offer this to help Leibniz out of a mess, but I think he would be appalled. The proposal seems close to 'prime matter' in Aristotle, which never quite does the job required of it. The idea is nice, though, and should be taken seriously.