Idealism and the Identity Theory of Truth

In a recent article, Hofweber (2019) presents a new, and surprising, argument for idealism. His argument is surprising because it starts with an apparently innocent premiss from the philosophy of language: that ‘that’-clauses do not refer. I do not think that Hofweber's argument works, and my first aim in this paper is to explain why. However, I agree with Hofweber that what we say about ‘that’-clauses has important metaphysical consequences. My second aim is to argue that, far from leading us into idealism, denying that ‘that’-clauses refer is the first step toward a kind of direct realism about belief.