Full Idea
For each concept, there will be some reasons or norms distinctive of that concept.
Gist of Idea
Concepts have distinctive reasons and norms
Source
Christopher Peacocke (Truly Understood [2008], 2.3)
Book Reference
Peacocke,Christopher: 'Truly Understood' [OUP 2008], p.76
A Reaction
This is Peacocke's bold Fregean thesis (and it sounds rather Kantian to me). I dislike the word 'norms' (long story), but reasons are interesting. The trouble is the distinction between being a reason for something (its cause) and being a reason for me.