Chapter 7

That is by nature prior which is implied in something else, while in itself it does not imply this; and which takes something else away when it itself is taken away, but is not necessarily taken away when the other is. For example, animal is by nature prior to man, for when the animal is taken away so as not to exist, then man will necessarily not exist either, because man is an animal. But, when man is taken away and does not exist, there can still be an animal —for there would be the horse and the dog and such, which are certain kinds of animals. Again, when man is postulated, then animal