The Philosopher's Index

The Philosopher’s Index is published by the Philosopher’s Information Center, a nonprofit, educational organization dedicated to serving the global philosophical community. The Philosophers Index has remained the world’s most authoritative and comprehensive bibliography in philosophy for nearly 50 years.

Serving philosophers worldwide, it contains over 600,000 records from publications that date back to 1902 and originate from 139 countries in 37 languages. The Philosopher’s Index provides the highest quality indexing, which yields superior search results.

- Our editors pre-screen each publication to ensure that it pertains to philosophy. You will not find extraneous information from other disciplines in The Index.
- Indexing is done by a team of 12 philosophers.
- Our assistant editors scan each article and book. They then capture the “aboutness” of each publication by assigning relevant keywords (subject headings and names) to all records.
- All of our indexing is done by philosophers without the assistance of computer indexing.
- To insure consistency, indexing is done using our Custom, Standardized Thesaurus to assign keywords to all records except Book Reviews.
- Our Thesaurus contains over 15,000 subject headings and over 40,000 names.