With nearly 300 entries on key concepts, review essays on central issues, and self-profiles by leading scholars, this companion is the most comprehensive and up-to-date single volume reference guide to epistemology. Epistemology from A-Z is comprised of 296 articles on important epistemological concepts that have been extensively revised to bring the volume up-to-date, with many new and re-written entries reflecting developments in the fieldIncludes 20 new self-profiles by leading epistemologistsContains 10 new review essays on central issues of epistemology