Description:Solomon Feferman is one of the leading figures in logic and the foundations of mathematics. This volume brings together a selection of his most important essays dealing with the light which results in modern logic cast on significant problems in the foundations of mathematics. It is essential reading for anyone interested in these subjects. Feferman presents key issues in the work of Cantor, Hilbert, Weyl, and Godel among others, and explains how they are dealt with by proof theory and other parts of logic. A number of the papers appeared originally in obscure places and are not well-known, and others are published here for the first time. All of the material has been revised and annotated to bring it up to date.