Abstract

This book is a study of meaning and meaninglessness which takes as its point of departure a discussion of sentences like "The theory of relativity is blue" which some philosophers call category mistakes and which this author calls type crossings. His answer to the question of the basis of the meaninglessness of such sentences differs from most currently fashionable ones. For example, he argues in separate chapters against the view that the basis for the meaninglessness of sentences involving type crossings is in the fact that they are ungrammatical. He also rejects the view that this basis is in the fact that the sentences violate certain rules of language His answer is that type crossings are meaningless because they designate unthinkable propositions. He then devotes two long and crucial chapters to an attempt to elaborate on the notion of unthinkability. His approach is more complicated than this brief summary would suggest for he distinguishes between accidental and essential properties and relations, requiring different criteria for type crossings involving accidental or essential attributes. Drange's views run against the grain of much contemporary philosophizing about meaning, e.g., his essentialism, his advocacy of a kind of synthetic a priori and his emphasis on thinkability over rules of language. But he comes to these positions by exposing what he takes to be difficulties in alternative views, so that his views are always challenging. Aside from its main theses, the book looks into topics about meaning and type crossings which other writers have scarcely noticed or discussed. For example, he tries to come to grips with the largely uncharted region of type crossings involving relational properties and those involving types other than types of things.--R. H. K.