OERs for Philosophy: eTextbooks

A peer-reviewed scholarly e-publication providing information on all areas of philosophical inquiry.

This Encyclopedia Britannica approved site features a philosophy dictionary, philosopher biographies, a timeline, and more.

An open source encyclopedia collaboratively written and refereed by experts in the field.

An introductory text by Lander University that can be downloaded as a whole or in parts as HTML, PDF, or mp3 files.

Free access to classic works of philosophy by Plato, Kant, Nietzsche, Hume, Russell, and more. Organized by topic.

This is a textbook (or better, a workbook) in modern philosophy. It combines readings from primary sources with two pedagogical tools.

by Lee Archie and John G. Archie - Almost all major works in philosophy are accessible via online sources on the Internet. Fortunately, most of the best work in philosophy is available as public domain; these readings provide convenient sources for almost anyone seeking to learn about ethics and ethical theory. Our present collection is composed almost entirely of public domain sources, edited and emended, and subject to the legal notice following the title page which references Appendix A.'

The goal of the textbook is to provide the reader with a set of tools and skills that will enable them to identify and evaluate arguments. The book is intended for an introductory course that covers both formal and informal logic. As such, it is not a formal logic textbook, but is closer to what one would find marketed as a “critical thinking textbook.”

Developed by a team at Portland Community College

forall x is an open access introductory textbook in formal logic. It covers translation, proofs, and formal semantics for sentential and predicate logic.

An Introduction To Reasoning is a set of three text-books, in critical reasoning, (introductory) logic, and scientific reasoning.