The essays collected in this volume, by one of the leading authorities on Russell's philosophy, all aim at recapturing and articulating aspects of Russell's philosophical vision during his most influential and important period, the two decades following his break with Idealism in 1899. One theme of the collection is Russell's views about propositions and the analysis of propositions, and the relation of those views to his rejection of Idealism. Another theme is the development of Russell's logicism. Hylton emphasizes Russell's conception of logic and argues that Russell's logicism plays a crucial role in Russell's argument against Idealism. A further focus of the volume is Russell's views about functions and propositional functions.