As with the original one-volume edition, the editor, mindful of the intrinsic difficulty of much of the material, has provided comprehensive introductions both to the various general topics and to each individual selection. By providing a detailed discussion of the historical and intellectual background to each piece, he aims to enable readers to approach the material without unnecessary barriers to understanding. The topics from Does God exist? to Do we have free will? and What is justice? have been chosen with a view both to their philosophical importance and to their interest to the first-year student. In an introductory chapter included in each of the three volumes, the editor provides a brief introduction to the nature of philosophical enquiry, to the nature of argument, and to the process of reading and writing within the academic discipline of philosophy.