First Philosophy: Knowledge and Reality brings together classic and ground-breaking readings on epistemology and the philosophy of science. Mindful of the intrinsic difficulty of much of the material, the editor has provided comprehensive introductions both to the central 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. In an introductory chapter, 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.