Single Idea 7300

[catalogued under 12. Knowledge Sources / B. Perception / 2. Qualities in Perception / c. Primary qualities]

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


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]