Comments on Stephen Read's “The Truth-Schema and the Liar”

This is an interesting and valuable essay. In it, Read takes a semantical analysis of truth developed by some of the best medieval writers, and formulates it using the resources of modern logic. His formulation seems to me to be impeccable. He also gives a pointed criticism of another medieval view (the view that every sentence says of itself that it is true). Attempts to provide a definition of truth for a language that contains a truth predicate that applies meaningfully to the sentences of that very language usually lead either to inconsistency (because of some version of semantic paradox) or else to a theory that fails to classify some sentences as true or not true. I will argue that Read's account of truth falls into the latter category.