The aim of these Locke Lectures is to develop a new conceptual apparatus in light of pragmatist and Wittgensteinian criticisms to traditional methods of analysis and show how this new method illuminates traditional philosophical problems. The traditional methods of philosophical analysis include, inter alia, reduction, supervenience, definition, and truthmaking, which are used to illuminate the relation between, for example, descriptive vocabulary and prescriptive or normative vocabulary ("Normative vocabulary supervenes on descriptive vocabulary" or "Normative vocabulary is reducible to descriptive vocabulary"). Here, Brandom develops a new method that he calls meaning-use analysis and illustrates its function using helpful meaning-use diagrams. When one vocabulary can be illuminated by another by meaning-use analysis, they stand in a "pragmatically mediated semantic relation" to each other. When one vocabulary is reducible to another, this means, roughly, that anything that can be said in one vocabulary can actually be said in the other. When one vocabulary stands in a pragmatically mediated semantic relation, in this case, the relation of being a "pragmatic metavocabulary," to another, this means that one can use one vocabulary to SAY what one needs to DO in order to correctly use the other vocabulary. For example, descriptive vocabulary could be a pragmatic metavocabulary of normative vocabulary or modal vocabulary: one can SAY in descriptive vocabulary what one must DO in order to count as correctly using normative or modal vocabulary. Brandom argues that when two vocabularies stand in this relation, one cannot say that one is completely mystified as to how one of the vocabularies works or what its terms mean; the vocabularies are thus illuminated by the new method of analysis in the way the old methods were thought to illuminate. Brandom goes on to show how descriptive, normative, modal, and intentional vocabulary stand in this new relation to each other. This is perhaps, by Brandom's own admission, not a completely novel idea, but Brandom's explication and application of it is brilliant. 5 stars without hesitation for the CONTENT of the book, but you should know that you can watch and read these lectures online at Brandom's website.