Full Idea
We can advance the thesis that all essential properties either determine a natural kind or are part of an essential property that does determine a natural kind.
Gist of Idea
Maybe essential properties are those which determine a natural kind?
Source
Baruch Brody (Identity and Essence [1980])
Book Reference
Brody,Baruch: 'Identity and Essence' [Princeton 1980], p.132
A Reaction
A useful clear statement of the view. I am opposed to it, because I take it to be of the essence of Socrates that he is philosophical, but humans are not essentially philosophical, and philosophers are unlikely to be a natural kind.