Essentialism (aka the idiocy of Nominalism)
Essentialism is the philosophy that states that essential characteristics of a thing can be separated from its accidents. What is an accident? It’s not just when you have a car wreck. In metaphysics, an accident is a characteristic of an entity that is not essential to its nature.
For example: I have two trees. They both have roots. They both have a main trunk. they both have branches. They both have leaves of some sort. The one on the left however is generally triangular in shape. It’s leaves stay green all year long and are very thin, hard and sharp. You can guess it is some sort of evergreen tree - pine for example. On the right is a tree that is generally broccoli shaped and has broad flat leaves that are not sharp and change colors and fall off in the fall. It is a deciduous tree - a maple for example.
It should be obvious what the essential characteristics of these trees are, and what the accidents are. The essential characteristic - the things that make them trees - are the trunk, the roots, the branches, the fact that they have some leaves of some sort. If any of these were missing in either case, we would not have a tree. We would have something untreeish. If there was a green shortish stalk that didn’t have any branches, but instead had petals, we would have a flower not a tree. But the accidents - the things that are incidental and not germane to the principal - can change without changing the essence of treeness. A tree can have a triangular shape or a broccoli shape. Or it can have other odd shapes. It can be tall or short. It can be a conifer or deciduous. It can have needles or broad, flat leaves. But in any case, it has roots, a trunk and leaves of some kind. (more…)