Full Idea
If one's naturalistic principles are formulated in terms of supervenience, then necessary entities are left untouched.
Gist of Idea
If naturalism refers to supervenience, that leaves necessary entities untouched
Source
Alexander Bird (Nature's Metaphysics [2007], 5.5)
Book Reference
Bird,Alexander: 'Nature's Metaphysics' [OUP 2007], p.114
A Reaction
I take this to be part of the reason why some people like supervenience - that it leaves a pure 'space of reasons' which is unreachable from the flesh and blood inside a cranium. Personall I like the space of reasons, but I drop the 'pure'.