Tractatus Logico-Philosophicus

Logisch-philosophische Abhandlung

By Ludwig Wittgenstein

First published by Kegan Paul (London), 1922.

Side-by-side-by-side edition, version 0.47 (November 15, 2017), containing the original German, alongside both the Ogden/Ramsey, and Pears/McGuinness English translations. Newest version available at:

The cover includes the photo “Ladders” by dev null, licensed under a Creative Commons Attribution Non-Commercial Share-Alike 2.0 License.