I have been perusing an old book by Simon Blackburn called Spreading the Word. In it, Blackburn has a very helpful little section describing the relationship between mind, language, and the world in the form of a triangle the corners of which are connected to one another by theories. The mind corner is connect to the world by a theory of knowledge and connected to the language corner by a theory of meaning. The world corner is connected to the language corner by a theory of truth. The idea is that one chooses a corner from which to develop theories for the sides. The task then becomes ensuring that one's corner contains a sufficient factual basis for all the three theories involved (meaning, knowledge, truth). Say you pick the world. The question is: what facts about the world provide the materials for your theories of meaning, truth, and knowledge? Say you pick the human mind. One would have to explain how sentences in natural languages have meanings, how those meanings c...