Full Idea
The most naïve opinion of number is that it is something like a heap in which things are contained. The next most naïve view is the conception of number as the property of a heap, cleansing the objects of their particulars.
Gist of Idea
The naïve view of number is that it is like a heap of things, or maybe a property of a heap
Source
Gottlob Frege (Review of Husserl's 'Phil of Arithmetic' [1894], p.323)
Book Reference
-: 'Mind July 1972' [-], p.323
A Reaction
A hundred toothbrushes and a hundred sponges can be seen to contain the same number (by one-to-one mapping), without actually knowing what that number is. There is something numerical in the heap, even if the number is absent.