Full Idea
The epistemic authority of coherence cannot itself be established by appeal to coherence.
Gist of Idea
Coherence can't be validated by appeal to coherence
Source
Laurence Bonjour (In Defence of Pure Reason [1998], §3.7 n50)
Book Reference
Bonjour,Laurence: 'In Defense of Pure Reason' [CUP 1998], p.92
A Reaction
The standard approach amongs modern philosophers (following, I think, Kripke) is to insist on 'intuition' as basic, despite all its problems. I have no better suggestion.