Full Idea
For Fodor the intentionality of the propositional-attitude vocabulary of our folk psychology is the outward expression of the inward intentionality of the language of the brain.
Gist of Idea
Is intentionality outwardly folk psychology, inwardly mentalese?
Source
comment on Jerry A. Fodor (works [1986]) by William Lyons - Approaches to Intentionality p.39
Book Reference
Lyons,William: 'Approaches to Intentionality' [OUP 1998], p.39
A Reaction
I would be very cautious about this. Folk psychology works, so it must have a genuine basis in how brains work, but it breaks down in unusual situations, and might even be a total (successful) fiction.