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Become a Friend of the SEP and Access PDFs (Stanford Encyclopedia of Philosophy)

Stanford Encyclopedia of Philosophy

Become a Friend of the SEP and Access PDFs

You can support the Stanford Encyclopedia of Philosophy by joining the Friends of the SEP Society. By paying modest, annual membership dues to join the Society, members will receive the following benefits: (a) download access to high quality PDF (Portable Document Format, a.k.a. Acrobat) versions of SEP entries and (b) quarterly email notifications (if you ‘opt-in’) that inform you when PDFs you've downloaded have been updated in the most recent quarterly SEP Archive.

Go to the Friends of the SEP Society Home Page
The home page for the Society is located at [].

Sample PDFs

Paper Size: US Letter
(8½ × 11 in)Paper Size: A4
(210 × 297 mm) Sample PDF
Entry on Turing Machines
Sample PDF
Entry on Turing Machines

We also release our PDFs in single-column half-sheets (5½ × 8½ in)—see the Sample PDF. You might find this format especially useful for mobile devices.

Membership Levels

You can join the Friends of the SEP Society, using our secure online payment system, at one of the following levels:

  • Associate Member: Associate members may download any of the PDF versions in the PDF Library but are limited to downloading a maximum of 5 different entries per day.
  • Student Member: Student members have the same privileges as Associate Members, but annual membership dues are priced lower.
  • Professional Member: Professional members may download any of the PDF versions in the PDF Library, with no daily limits on the number of different entries that can be downloaded each day.

For pricing information, see the section on Membership Levels at the page About the Society.



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The Stanford Encyclopedia of Philosophy is copyright © 2020 by The Metaphysics Research Lab, Center for the Study of Language and Information (CSLI), Stanford University

Library of Congress Catalog Data: ISSN 1095-5054