In asking how we arrive at the canonical ten categories, Chatton argues against Peter Auriol and Ockham’s view that the categories are generated by asking ten different questions of a substance. On this view, the responses to “what is it” form the category substance (e.g., ‘animal,’ ‘body’), to “how many” or “how much” form the category quantity (e.g., ‘three’), to “how is it” form the category quality (e.g., ‘brown,’ ‘curved’), to “whose is it” or “in respective of what is it” form the category relation (e.g., ‘mother,’ ‘similar’) and so on. Chatton objects to this view on three grounds: (1) we can ask many more questions of substance than these ten so the choice is arbitrary without further elaboration; (2) why limit the questions to questions about substance? Why not ask “how much” or “what is it” of quality too? And finally (3) God would end up in all or most of the categories since we can ask these questions of him.