Full Idea
To have one belief or desire, I have to have a whole network of other beliefs and desires.
Gist of Idea
Beliefs only make sense as part of a network of other beliefs
Source
John Searle (The Rediscovery of the Mind [1992], Ch. 8.I)
Book Reference
Searle,John R.: 'The Rediscovery of the Mind' [MIT 1999], p.176