Full Idea
It may be that intentional states are relations to mental symbols, and mental processes are implemented by causal relations among these symbols.
Clarification
'Intentional' states are 'about' something, with meaning and content
Gist of Idea
Intentional states and processes may be causal relations among mental symbols
Source
Jerry A. Fodor (Jerry A. Fodor on himself [1994], p.296)
Book Reference
'A Companion to the Philosophy of Mind', ed/tr. Guttenplan,Samuel [Blackwell 1995], p.296
A Reaction
It is hard to see how something could have causal powers just by being a symbol. The theory needs something else to drive the causation.