Thoughts and other mental states are defined by their role in a functional system. Since it is easier to determine when we have knowledge than when reasoning has occurred, Gilbert Harman attempts to answer the latter question by seeing what assumptions about reasoning would best account for when we have knowledge and when not. He describes induction as inference to the best explanation, or more precisely as a modification of beliefs that seeks to minimize change and maximize explanatory coherence. Originally (...) published in 1973. The Princeton Legacy Library uses the latest print-on-demand technology to again make available previously out-of-print books from the distinguished backlist of Princeton University Press. These editions preserve the original texts of these important books while presenting them in durable paperback and hardcover editions. The goal of the Princeton Legacy Library is to vastly increase access to the rich scholarly heritage found in the thousands of books published by Princeton University Press since its founding in 1905. (shrink)

When originally published in 1952, this book filled a gap in the history of philosophy and science and remains an important work today, because it puts the main mathematical and physical discoveries of Descartes in an accessible form, for the benefit of English readers. Descartes is acknowledged to be the founder of modern mathematics, through his invention of analytical geometry and this volume charts Descartes’ role in bringing a unity into algebra and geometry and the development of mathematics into a (...) discipline which could be properly analysed. Carefully paraphrasing the Géométrie, this volume retains much of Descartes’ original notation as well as the original diagrams. The volume also discusses the considerable contribution that Descartes made to the physical sciences which involved accurate work in optics, light, sight and colour. (shrink)