Tracing the exchange of ideas among history's key philosophers, The Great Conversation: A Historical Introduction to Philosophy, Ninth Edition, provides a generous selection of excerpts from major philosophical works and makes them more easily understandable to students with lucid and engaging explanations. Extensive cross-referencing shows students how philosophers respond appreciatively or critically to the thoughts of other philosophers. The Great Conversation, Eighth Edition, is also available in two separate volumes to suit your course needs: The Great Conversation: Volume I: Pre-Socratics through Descartes, Ninth Edition The Great Conversation: Volume II: Descartes through the Twentieth Century, Ninth Edition