Full Idea
The requirement that I state reasons that I acted on requires a reference to the self. …Only for a self can something be a reason for an action.
Gist of Idea
Giving reasons for action requires reference to a self
Source
John Searle (Rationality in Action [2001], Ch.3.VII)
Book Reference
Searle,John R.: 'Rationality in Action' [MIT 2001], p.86
A Reaction
Why can't we just say that this reason, given this desire and this belief, led to this action, and never mention the self? Admittedly leaving out 'I' is an odd circumlocution, but I don't find this particular argument very convincing.