Abstract
THIS BOOK is, in effect, a sequel to the author’s Models for Modalities and purports to carry forward the case for the feasibility of a "possible-worlds" semantics. The main contention of the book is that such a semantics has its chief application in the study of propositional attitudes. But a good deal more than this is claimed, namely, applicability to the study of epistemic notions in general, to the study of causality and the language of the sciences, to the exact study of phenomenology, to the linguistics, to the problem of "representation" in the arts, and even to the foundations of statistics and probability theory.