On one interpretation, the sense in which a representation would be impossible or nothing to me if it could not accompanied with the ‘I think’ is simply that I could not then become conscious of it (Guyer 1987: 139–44). It is credible that for any representation of which I am conscious, I can attribute it to myself as subject, assuming my mental faculties are in working order, and if no controversial account of the nature of the subject is presupposed. However, the claim that I can become consci