Full Idea
We have the visual metaphor of introspection, and the spatial metaphor of privileged access, but neither one works because I am the thing being viewed, and I am the space being entered.
Gist of Idea
Neither introspection nor privileged access makes sense
Source
John Searle (The Rediscovery of the Mind [1992], Ch. 4.II)
Book Reference
Searle,John R.: 'The Rediscovery of the Mind' [MIT 1999], p.98
A Reaction
This is quite a good warning against reliance on analogies when dealing with the unique problem of self-knowledge, though the phrase 'hall-of-mirrors' draws assent from most people concerning that topic.