This is a critical exposition and limited defence of a theory of first- person belief transiently held by Roderick Chisholm after giving up the early haecceity theory of Person and Object and before adopting the late self-attribution theory of The First Person. I reconstruct that 'middle' theory as involving what I call a 'hard-core' approach to de re belief and I rebut objections concerning epistemic supervenience and abnormal consciousness. In my rebuttals, I sketch a variant of the middle theory according (...) to which first- person belief essentially involves the believer's introspective acquaintance with herself. (shrink)