Consisting of eighteen essays the book is organized into three broad groupings: those concerned with identifying the a priori, explaining the a priori, and the scope of the a priori. The introduction proves a useful navigational aid to the book, not least for providing a brief account of contemporary developments in the explication of a priority. Some essays possess the elegance and clarity others lack though all are eminently readable and accessible to anyone with a reasonable grasp of philosophy. Copyright (C) Muze Inc. 2005. For personal use only. All rights reserved.