Month: October 2022 (page 1 of 1)


Kirchberg am Wechsel, Austria, August 6–12, 2023

100 Years of Tractatus Logico-Philosophicus – 70 Years after Wittgenstein’s Death: A Critical Assessment

Scientific Organisers:
Alois Pichler (Bergen), Esther Heinrich-Ramharter (Vienna) and Friedrich Stadler (Vienna)

We have extended the Kirchberg IWS 2023 paper submission deadline until April 1st


  1. Wittgenstein
  2. Wittgenstein (1889–1951) – Research, editions, and access situation 70 years after his death
  3. Logisch-philosophische Abhandlung and Tractatus Logico-Philosophicus –Genesis, translation, publication, and edition in context
  4. TLP within and outside of Wittgenstein’s work –Interactions, receptions, and controversial interpretations of Wittgenstein’s work up to the present
  5. TLP: Open philosophical, ethical, and scientific questions
  6. Wittgenstein, Schlick, Waismann, and the Vienna Circle – A reassessment


Hanne Appelqvist (Helsinki)

Michael Beaney (Berlin/Aberdeen) 

Anat Biletzki (Quinnipiac)

Anna Boncompagni (Irvine) 

Anne-Marie S. Christensen (Odense) 

Annalisa Coliva (Irvine)

James Conant (Chicago)

Maria Carla Galavotti (Bologna) 

Mauro Engelmann (Minas Gerais) 

Christian Erbacher (Bergen/Frankfurt) 

Arthur Gibson (Cambridge)

Richard Heinrich (Vienna)

Lars Hertzberg (Åbo)

Herbert Hrachovec (Vienna)

Allan Janik (Innsbruck)

Wolfgang Kienzler (Jena) 

James Klagge (Blacksburg) 

Oskari Kuusela (East Anglia) 

Jakub Mácha (Brno)

Stefan Majetschak (Kassel) 

Dejan Makovec (Pittsburgh) 

Anat Matar (Tel Aviv)

Cheryl Misak (Toronto) 

Gabriele Mras (Vienna) 

Michael Nedo (Cambridge) 

Jesús Padilla Gálvez (Toledo) 

Martin Pilch (Vienna)

John Preston (Reading)

Alfred Schmidt (Vienna)

Joachim Schulte (Zurich)

Radek Schuster (Pilsen)

Genia Schönbaumsfeld (Southampton) 

Jonathan Smith (Cambridge)

Ilse Somavilla (Innsbruck)

Antonia Soulez (Paris)

David G. Stern (Iowa)

Susan G. Sterrett (Wichita) 

Thomas Uebel (Manchester)

Sarah Uffelmann (Bergen/Munich) Nuno Venturinha (Lisbon)

Thomas Wallgren (Helsinki) 

Joseph Wang-Kathrein (Innsbruck) 

Anja Weiberg (Vienna)

Papers (to section 1–6) may be submitted via our online platform from January 1st to March 1st, 2023

Instructions for authors: Students and early career researchers are especially encouraged to submit a presentation.

–––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––– Antecedent to the 44th International Wittgenstein Symposium:

14th Ludwig Wittgenstein Summer School, August 1–5, 2023 organised by ILWI in cooperation with the University of Klagenfurt:

Wittgenstein’s Last Writings – The Inner and Outer in Context

with Lars Hertzberg (Åbo) & David G. Stern (Iowa),
Scientific Organisation and Direction: Volker A. Munz (Klagenfurt)

For further information visit us at

The collected volume WITTGENSTEIN'S PHILOSOPHY IN 1929, published by Routledge in 2023, is now available for pre-order.

The book explores the impact of manuscript remarks during the year 1929 on the development of Wittgenstein’s thought. Although its intention is to put the focus specifically on the manuscripts, the book is not purely exegetical. The contributors generate important new insights for understanding Wittgenstein’s philosophy and his place in the history of analytic philosophy.

Wittgenstein’s writings from the years 1929-1930 are valuable, not simply because they marked Wittgenstein’s return to academic philosophy after a seven-year absence, but because these works indicate several changes in his philosophical thinking. The chapters in this volume clarify the significance of Wittgenstein’s return to philosophy in 1929. In Part 1, the contributors address different issues in the philosophy of mathematics, e.g. Wittgenstein's understanding of certain aspects of intuitionism and his commitment to verificationism, as well as his idea of "a new system". Part 2 examines Wittgenstein's philosophical development and his understanding of philosophical method. Here the contributors examine particular problems Wittgenstein dealt with in 1929, e.g. the colour-exclusion problem, and the use of thought experiments as well as his relationship to Frank Ramsey and philosophical pragmatism. Part 3 features essays on phenomenological language. These chapters address the role of spatial analogies and the structure of visual space. Finally, Part 4 includes one chapter on Wittgenstein’s few manuscript remarks about ethics and religion and relates it to his Lecture on Ethics.

Wittgenstein’s Philosophy in 1929 will be of great interest to scholars and advanced students working on Wittgenstein and the history of analytic philosophy.


Introduction: Wittgenstein in 1929 
Andrew Lugg

PART I: Mathematics and Thinking the New

1. Wittgenstein’s Struggle with Intuitionism 
Mathieu Marion and Mitsuhiro Okada

2. The Origins of Wittgenstein’s Verificationism 
Severin Schroeder

3. Searching in Space vs. Groping in the Dark: Wittgenstein on Novelty and Imagination in 1929-30 
Pascal Zambito

PART 2: Method and Development

4. The Color-Exclusion Problem and the Development of Wittgenstein’s Philosophy of Logic 
Oskari Kuusela

5. What Would It Look Like? Wittgenstein’s Radical Thought Experiments 
Mauro Luiz Engelmann

6. Phenomenological Language: "not possible" or "not necessary"? 
Florian Franken Figueiredo

7. Hypotheses as Expectations: Ramsey and Wittgenstein 1929 
Cheryl Misak

PART 3: Phenomenology and Visual Space

8. Simplicity in Wittgenstein’s 1929 Manuscripts 
Michael Hymers

9. Temptations of Purity: Phenomenological Language and Immediate Experience 
Mihai Ometiță

10. Speaking of the Given: The Structure of Visual Space and the Limits of Language 
Jasmin Trächtler

PART 4: Ethics

11. The Good, the Divine, and the Supernatural 
Duncan Richter 

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