Full Idea
An object cannot lack shape, size, position or motion and remain an object.
Gist of Idea
An object cannot remain an object without its primary qualities
Source
Cardinal/Hayward/Jones (Epistemology [2004], Ch.4)
Book Reference
Cardinal/Hayward/Jones: 'Epistemology: the theory of knowledge' [John Murray 2004], p.98
A Reaction
This points towards the essentialist view (see Idea 5453). This does raise the question of whether an object could lose its colour with impugnity, or the quality of sound that it makes when struck.
Related Idea
Idea 5453 Essentialists mostly accept the primary/secondary qualities distinction [Ellis]