philpapers.org
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PhilPapers is a comprehensive online index and bibliography of philosophy literature, aggregating scholarly articles, books, theses, and reviews from journals and publishers. It provides powerful search and browse tools by topic, author, and subfield, with links to full texts when available.
More resources on Philosophy
The Partially Examined Life
Discussion podcast in which former philosophy graduate students read one primary text per episode, from Plato and Hume to Nietzsche and Wittgenstein, and work through its arguments in detail. Listeners gain guided, close readings of canonical works without prior training.
plato.stanford.edu
The Stanford Encyclopedia of Philosophy is a peer‑reviewed online encyclopedia of philosophy featuring in‑depth, scholarly articles written and regularly updated by experts, including comprehensive coverage of logic topics.
Philosophy Now
Issue archive of the UK magazine Philosophy Now, founded in 1991, with short accessible articles by academics and writers on ethics, metaphysics, philosophy of mind and political thought, useful for sampling current debates before reading primary texts.
1000-Word Philosophy
An anthology of introductory philosophy essays, each about a thousand words, written by academic philosophers and peer-reviewed before publication. Each entry defines a problem, sets out the main arguments, and points to further reading on ethics, metaphysics, logic and more.
Internet Encyclopedia of Philosophy
Peer-reviewed reference work written by academic specialists, with entries on thinkers, movements and problems across metaphysics, ethics, logic and the history of the discipline. Articles are pitched more accessibly than Stanford's and are freely available.
Stanford Encyclopedia of Philosophy - Epistemology
Stanford's scholarly entry on the theory of knowledge, tracing what knowledge is, how belief is justified, and where the main disputes lie. Denser than an introductory text, with an extensive bibliography for following any thread further.