Full books in PDF format. These are the books that are generally considered standard reading for anybody interested in philosophy.
There are certain books that are essential to an education about the human condition of which I believe should be available for free and with easy access to everybody. Each book on this list is in PDF format. I have organized them by the last name of the author. This list is more comprehensive and nuanced than the previous list, as it includes books that hold cultural significance in various fields of study.
“The Stanford Encyclopedia of Philosophy organizes scholars from around the world in philosophy and related disciplines to create and maintain an up-to-date reference work.”
“The Internet Encyclopedia of Philosophy (IEP) was founded in 1995 to provide open access to detailed, scholarly information on key topics and philosophers in all areas of philosophy. The Encyclopedia receives no funding, and operates through the volunteer work of the editors, authors, volunteers, and technical advisers.”
“The Routledge Encyclopedia of Philosophy Online (REP Online) is the largest and most comprehensive resource available for all those involved in the study of philosophy. It is a trusted source of quality information, providing access to over 2,700 articles that have been edited for level and consistency by a team of renowned subject experts.”
“The Catholic Encyclopedia, as its name implies, proposes to give its readers full and authoritative information on the entire cycle of Catholic interests, action and doctrine. What the Church teaches and has taught; what she has done and is still doing for the highest welfare of mankind; her methods, past and present; her struggles, her triumphs, and the achievements of her members, not only for her own immediate benefit, but for the broadening and deepening of all true science, literature and art— all come within the scope of the Catholic Encyclopedia.”
“PhilSci-Archive is an electronic archive specifically tailored to and run by philosophers of science. The archive is offered as a free service to the philosophy of science community. Its goal is to promote communication in the field by the rapid dissemination of new work. We aim to provide a stable, openly accessible repository in which scholarly articles and monographs may find a permanent home.”
“This site is a freely available archive of electronic texts about religion, mythology, legends and folklore, and occult and esoteric topics. Texts are presented in English translation and, where possible, in the original language.”
“The Marxists Internet Archive is an all-volunteer, non-profit public library, started more than 20 years ago in 1990. In 2006, MIA averaged 1.1 million visitors per month, downloading 15.5 million files per month.”
“The mission of the Christian Classics Ethereal Library (CCEL) is to build up the church by making classic Christian literature widely available and promoting its use for edification and study by interested Christians, seekers and scholars. The CCEL accomplishes this by selecting, collecting, distributing, and promoting valuable literature through the World Wide Web and other media.”
“Philosophy Index is a site devoted to the study of philosophy and the philosophers who conduct it. The site contains a number of philosophy texts, brief biographies and introductions to philosophers and explanations on a number of topics.”
“Select from a list of 441 works of classical literature by 59 different authors, including user-driven commentary and “reader’s choice” Web sites. Mainly Greco-Roman works (some Chinese and Persian), all in English translation.”
“On this site you will find versions of some classics of early modern philosophy, and a few from the 19th century, prepared with a view to making them easier to read while leaving intact the main arguments, doctrines, and lines of thought.”
“PhilPapers is a comprehensive index and bibliography of philosophy maintained by the community of philosophers. We monitor all sources of research content in philosophy, including journals, books, open access archives, and personal pages maintained by academics. We also host the largest open access archive in philosophy. Our index currently contains 2,288,432 entries categorized in 5,268 categories. PhilPapers has over 190,000 registered users.”
“Religion Online is designed to assist teachers, scholars and general “seekers” who are interested in exploring religious issues. The aim is to develop an extensive library of resources, representing many different points of view, but all written from the perspective of sound scholarship. While the initial orientation has been to seek material written primarily from a Christian perspective, the ultimate aim is to broaden the scope to include material on all the world’s major religions.”
“A portal for Wikipedia’s philosophy resources, 16,148 articles in English.”