The third edition of this popular compendium provides the necessary intellectual equipment to engage with and participate in effective philosophical argument, reading, and reflection. The book features significantly revised, updated, and expanded entries, along with a broad, pluralistic approach--appealing to readers in both continental philosophy and the history of philosophy, as well as analytic philosophy. The author explains difficult concepts in an easily accessible manner, and addresses the use and application of these concepts. The Philosopher's Toolkit has proven useful to philosophy students at both beginning and advanced levels.