Intelligible Kinds and Natural Kinds in Plotinus

Naturalization without Natural Kinds:

Naturalization without Natural Kinds: On the prospects of a unified theory of religion. From the propagation of religion, it is not hard to understand the causes of the resolution of the same into its first seeds or principles; which are only an opinion of a deity, and powers invisible and supernatural; that can never be so abolished out of human nature but that new religions may again be made ...

Semantic Natural Kinds Brendan

The first of the two sentences in (1) entails the second; necessarily, if the first is true then so is the second. Moreover, (1) is an instance of a more general pattern whose validity doesn’t seem to depend on the specific meanings of the words in (1). The adverb ‘quickly’, for example, can be replaced with any of a wide range of adverbs without loss of validity; analogous remarks hold for the...

What are natural kinds ?

Are Emotions Natural Kinds?

Laypeople and scientists alike believe that they know anger, or sadness, or fear, when they see it. These emotions and a few others are presumed to have specific causal mechanisms in the brain and properties that are observable (on the face, in the voice, in the body, or in experience)-that is, they are assumed to be natural kinds. If a given emotion is a natural kind and can be identified obje...

What are Natural Kinds ?

1. Two Questions Distinguish two questions about natural kinds. First, the naturalness question: what, if anything, makes a natural kind natural? Perhaps the members of a natural kind, unlike the members of an arbitrary group, stand in some natural similarity relation to one another. Perhaps they share an essence or some other natural feature. Or perhaps, as conventionalists argue, the boundari...