  Perry's third objection is the nonsufficiency of belief. Consider the case of Hume and Heimson. Heimson believes that he is Hume. But Heimson isn't just crazy, but also well informed about every aspect of Hume's life. Still, Hume says something true when he utters the sentence ‘I wrote the Treatise’ and Heimson says something false. If so, then, by Truth, they say different things, despite the similarity in their qualitative descriptive beliefs. Even though Heimson's descriptive beliefs about who he is best fit Hume, still his self-thoughts are about Heimson and not Hume. The Fregean cannot, Perry claims, account for this.