The statement is not about all the individuals that have the nature of male and the nature of female, but about those natures in abstraction from the individuals that have them. Those who reject all generalizations because they can find some exceptions to them are thinking only on the concrete sense level of extension, not on the abstract con- ceptual level of comprehension; they are operating like cameras (sense experi- ence) plus computers (calculating the quantities of extension), but not like human minds (understanding essences, natures, “what's”)