This page brings together free online books, topic searches, audiobooks, and Open Access resources related to philosophy and philosophical thought, including ethics, logic, metaphysics, religion, political philosophy, and major philosophers. The materials range from older public domain works to modern scholarly studies.
The Topics section below helps readers find books and documents within the huge Internet Archive collection, which includes periodicals and other materials, from older historical works to recent publications. Each topic link generates an Internet Archive search focused on that subject. Browsing the topics and selecting those of interest is usually easier and more effective than searching Internet Archive directly.
Sections below Topics provide links to related selected books, audiobooks and modern Open Access books. See those sections for more information.
Topics – Philosophy Books PDF Free
The topic links below lead to Internet Archive search results related to philosophy and philosophical thought. Each link opens a books-and-documents search focused on a particular topic.
Search results generally include fully readable books, periodicals, and other documents. For some subjects, Internet Archive also contains other media, such as images, audio, or video files. These can be selected from the media options above the search results. Filters on the left side of Internet Archive pages can help narrow search results by year, language, or related subjects.
Philosophy Textbooks History & Surveys
Philosophy Books
- Absurd (Philosophy)
- Accidents (Philosophy)
- Aesthetics
- Affiliation (Philosophy)
- Alaska Native philosophy
- Alienation (Philosophy)
- American
- Analysis (Philosophy)
- Ancient
- Animals (Philosophy)
- Antinomy
- Anti-realism
- Applied philosophy
- Arab
- Architecture and philosophy
- Art and philosophy
- Asian
- Atheism
- Atomism
- Autonomy (Philosophy)
- Axioms
- Becoming (Philosophy)
- Belief and doubt
- Bibliography
- British
- Buddhist philosophy
- Canadian
- Causation
- Central American
- Chain of being (Philosophy)
- Chinese
- Christian philosophy
- Communism and philosophy
- Complexity (Philosophy)
- Comprehension (Theory of knowledge)
- Confucian
- Consciousness
- Consequentialism (Ethics)
- Constructivism (Philosophy)
- Contextualism (Philosophy)
- Contradiction
- Criticism (Philosophy)
- Cycles
- Cynicism
- Depth (Philosophy)
- Desire (Philosophy)
- Determinism (Philosophy)
- Dialetheism
- Dictionaries
- Distraction (Philosophy)
- Division (Philosophy)
- Dualism
- Egoism
- Emergence (Philosophy)
- Emotions (Philosophy)
- Emptiness (Philosophy)
- Engagement (Philosophy)
- English
- Entity (Philosophy)
- Essentialism (Philosophy)
- Ethics
- Ethnophilosophy
- Events (Philosophy)
- Evidence
- Evolution
- Expression (Philosophy)
- Extension (Philosophy)
- Fate and fatalism
- Femininity (Philosophy)
- Finalism (Philosophy)
- Formalization (Philosophy)
- Four elements (Philosophy)
- French
- German
- Good and evil
- Grounding (Philosophy)
- Harmony (Philosophy)
- Hedonism
- Hindu philosophy
- History
- Human body (Philosophy)
- Humanism
- Idealism
- Ideals (Philosophy)
- Identity (Philosophical concept)
- Ideology
- Illusion (Philosophy)
- Immanence (Philosophy)
- Immaterialism (Philosophy)
- Immortality (Philosophy)
- Indian philosophy
- Indic
- Individuation (Philosophy)
- Infallibility (Philosophy)
- Infinite regress
- Innate ideas (Philosophy)
- Instinct (Philosophy)
- Institutions (Philosophy)
- Instrumentalism (Philosophy)
- Intentionality (Philosophy)
- Interpretation (Philosophy)
- Introductions
- Iranian
- Irrationalism (Philosophy)
- Irreducibility (Philosophy)
- Irreligion
- Islam and philosophy
- Isolation (Philosophy)
- Jaina philosophy
- Japanese
- Judaism and philosophy
- Justice (Philosophy)
- Knowledge, Theory of
- Korean
- Latin American
- Law (Philosophical concept)
- Limitarianism (Philosophy)
- Listening (Philosophy)
- Logic
- Logos (Philosophy)
- Marxist
- Materialism
- Mechanism (Philosophy)
- Medieval
- Melancholy (Philosophy)
- Memory (Philosophy)
- Metaphysics
- Mexican
- Modern
- Monism
- Movement (Philosophy)
- Music and philosophy
- Naturalism
- Negativity (Philosophy)
- Neoplatonism
- Nihilism (Philosophy)
- Nominalism
- Nonexistent objects (Philosophy)
- Norm (Philosophy)
- Object (Philosophy)
- Objectivism (Philosophy)
- One (The One in philosophy)
- Ontology
- Operationalism
- Opposition, Theory of
- Optimism
- Order (Philosophy)
- Organism (Philosophy)
- Origin (Philosophy)
- Panentheism
- Panpsychism
- Pantheism
- Parapsychology and philosophy
- Peace (Philosophy)
- Perception (Philosophy)
- Perfection
- Performative (Philosophy)
- Periodization
- Personalism
- Perspective (Philosophy)
- Pessimism
- Phenomenalism
- Philosophical behaviorism
- Philosophy of mind
- Plants (Philosophy)
- Pluralism
- Polarity (Philosophy)
- Positivism
- Posthumanism
- Power (Philosophy)
- Pragmatism
- Primitivism
- Principle (Philosophy)
- Priority (Philosophy)
- Process philosophy
- Psychoanalysis and philosophy
- Psychology and philosophy
- Purity (Philosophy)
- Quality (Philosophy)
- Quantity (Philosophy)
- Qurʼan and philosophy
- Realism
- Reductionism
- Reflection (Philosophy)
- Relation (Philosophy)
- Relevance (Philosophy)
- Renunciation (Philosophy)
- Representation (Philosophy)
- Schematism (Philosophy)
- Scholasticism
- Scottish
- Secret (Philosophy)
- Self (Philosophy)
- Sense (Philosophy)
- Shinto philosophy
- Sikh philosophy
- Silence (Philosophy)
- Simplicity (Philosophy)
- South American
- Space and time
- Spanish
- Spiritualism (Philosophy)
- Spirituality
- Strategy (Philosophy)
- Structuralism
- Study and teaching
- Style (Philosophy)
- Subject (Philosophy)
- Sufficient reason
- Taoist philosophy
- Teleology
- Theism
- Theory (Philosophy)
- Thomism
- Thought and thinking
- Tradition (Philosophy)
- Transcendence (Philosophy)
- Transcendentalism
- Transhumanism
- Triads (Philosophy)
- Truth
- Universals (Philosophy)
- Utilitarianism
- War (Philosophy)
- Will
- Woman (Philosophy)
- Youth and philosophy
- Zoroastrian philosophy
Useful Tools – Best Philosophy Books PDF Free Download
The selected free online books below provide an alternative to searching Internet Archive through the Topics section above. These individual titles were chosen as especially useful or representative works related to subjects on this page.
Search for an Author’s Books
Try searching for books by author. In the search bar in this link, in the creator field, replace LAST, FIRST with the author’s name. Save books you like to your Internet Archive account by clicking “Favorite” while logged in.
50 Philosophy Classics
Use Search for an Author’s Books, the first entry on this page, to find free online copies at the Internet Archive.
31 Most Important Philosophy Books 1950-2000
Two philosophy professors surveyed 16 philosophers to get a list of the most important and influential philosophical books since 1850, and produced this list. Use Search for an Author’s Books, the first entry on this page, to find free online copies at the Internet Archive.
Folkscanomy Philosophy: Philosophy and Introspection
Folkscanomy collection of thousands of philosophy books, including hundreds from recent years.
Free Philosophy Audiobooks – Librivox
These audiobook links lead to public domain recordings from LibriVox at Internet Archive. The books recorded by Librivox volunteers were nearly all published before 1930. Recordings include history of philosophy, classical philosophy, German philosophy, Medieval philosophy, and many other approaches.
All Librivox audiobooks are free and can be streamed online or downloaded for offline listening.
Open Access Philosophy Books and Textbooks PDF Free Download
The Open Access books and other materials below are modern works made freely available online by universities, academic publishers, the Library of Congress, and other organizations. Many reflect current scholarship and research.
Some works may only be read online, but many can also be downloaded as PDF or EPUB files.
Related Pages on Century Past
See our Century Past directories for hundreds of webpages of Books; Magazines; Articles, maps, & photos; and Newspapers. You’ll find the same directories on the top Menu. Here are a few suggested pages: