Full Idea
A plausible methodological principle is that underlying every good extrinsic explanation there is an intrinsic explanation.
Gist of Idea
Beneath every extrinsic explanation there is an intrinsic explanation
Source
Hartry Field (Science without Numbers [1980], 5)
Book Reference
Field,Hartry: 'Science without Number' [Blackwell 1980], p.44
A Reaction
I'm thinking that Hartry Field is an Aristotelian essentialist, though I bet he would never admit it.