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Philosophisches Seminar

Themes from Wittgenstein’s On Certainty

International Workshop, November 18 – 19, 2022

Wittgenstein’s posthumously published On Certainty has been described as his third masterpiece, comparable in its philosophical interest to the Tractatus or the Philosophical Investigations. While this exact phrasing of the thesis may be contested, as it leaves out other philosophically engaging fragments of the Nachlass, the attention that scholars have directed to On Certainty since the turn of the century fully justifies the comparison. The debate around the text has seen the flourishing of a plurality of readings, none of which can claim a widespread acceptance. This is partially due to the nature of On Certainty, which consists of a collection of unrevised remarks that oftentimes sacrifice clarity to depth. But the fertility of this document is also a consequence of the wide-reaching nature of its sections, which touch on a variety of philosophical issues.

This workshop is aimed at improving both the clarity and the breadth of our understanding of the notoriously difficult text. It brings together up-and-coming and distinguished Wittgensteinian scholars, each with their own focus of expertise, ranging from the history of philosophy to the philosophy of science. The combination of different approaches will help bringing out the many facets of Wittgenstein’s text.

Confirmed Speakers

  • Alexis Fogelman (Oxford)
  • Hans-Johann Glock (Zürich)
  • Vasso Kindi (Athens)
  • Bernhard Ritter (Graz)
  • Edoardo Sartore (Zürich)
  • Jasmin Trächtler (Dortmund)
  • Anja Weiberg (Vienna)

Programme (PDF, 126 KB)


Kutscherhaus, Zollikerstrasse 115, 8008 Zürich, Switzerland (Room: ZOB E-2)


If you would like to attend and for any questions please email to


Hans-Johann Glock (University of Zürich), Christoph C. Pfisterer (University of Zürich), Edoardo Sartore (University of Zürich).

The event is funded by the Mlle. Marie Gretler Stiftung and the Hochschulstiftung of the University of Zürich.

Weiterführende Informationen

Themes from Wittgenstein’s On Certainty