Chapter 14

There are four ways in which a thing is said to be property. In the first place, that is said to be a property which is in one species only but not in the entire species. Such, for example, is the ability which man has for land-surveying, for only man surveys land, yet not every man does have this ability. Secondly, that is said to be a property which belongs to the entire species but not to just one species. An example would be the having of two feet. Thus, every man is a biped, but not man only, because the dove is a biped, too, and so are others of the sort. Thirdly, that is said to be a p