It should now be clear what Chatton means when he says that an individual is in a category. Socrates is the individual res whose species concept – ‘human being’ – is essentially predicated by all the genus concepts within its given categorial line – ‘animal,’ ‘body,’ ‘substance’ – and he is nothing but a set of individuated natures. Similarly, the whiteness that inheres in Socrates, whose specific concept ‘whiteness’ is essentially predicated by ‘colour,’ ‘sensible quality,’ ‘quality’ is an individuated nature. Individuals, or rather individuated natures, fall into the ten basic classes of things that are signified by category concepts.