I. Mathematik. Berlin, Boston: De Gruyter. invited and in preparation.

II. Ineffability and its Metaphysics: The Unspeakable in Art, Religion, and PhilosophyNew York: Palgrave Macmillan, 2016 (Get!)

Click here for a review by Keith Ward in Notre Dame Philosophical Reviews (NDPR); here for a review by Robert Clarke in Culture and Dialoguehere for a review by Guy Bennett-Hunter, featured as “Book of the Month”, in The Expository Timeshere for a review by Sebastian Gäb in Zeitschrift für philosophische Literaturhere for a review by William Franke and Chance Woods in The Year’s Work in Critical and Cultural Theory; and here for a review by Sameer Yadav in the Journal of Analytic Theology.

Articles (peer-reviewed)

  1. ‘Mathematical Pluralism and Indispensability.’ (2023) Erkenntnis. Vol. tba. – Get!
  2. ‘The Rationality of Theism’, forthcoming in Jack Symes (ed.). Philosophers on God. London: Bloomsbury.
  3. ‘Mathematical Indispensability and Arguments from Design.’ (2021) Philosophia, Vol. 49,

    2085–2102. – Get!

  4. ‘Whereof One Cannot Speak.’ (2021) In: Daniel Frank and Aaron Segal (ed.), Cambridge Critical Guide to Maimonides’s Guide of the Perplexed. Cambridge: CUP. – Get!
  5. ‘Mathematical and moral disagreement.’ (2019) The Philosophical Quarterly, Vol. 70, No. 279, 302-327. – Get!
  6. ‘Modal Structuralism and Theism.’ (2018) In: Fiona Ellis (ed.), New Models of Religious Understanding. Oxford: OUP. (Get!) — Reviewed in The Times Literary Supplement, 6. September 2019 (Get!)
  7. ‘Aesthetic Ineffability.’ (2017) Philosophy Compass, Vol. 12 No. 2. (Get!)
  8. ‘Access Problems and Explanatory Overkill.’ (2017) Philosophical Studies, Vol. 174 No. 11. (Get!)
  9. ‘Mathematical and Religious Belief.’ (2016) In: Rico Gutschmidt/ Thomas Rentsch (eds.): God without Theism? New Positions about a Timeless Question. Münster: Mentis.
  10. ‘On Mathematical and Religious Belief, and On Epistemic Snobbery.’ (2015) Philosophy Vol. 91 No. 1: 69-92. (Get!)
  11. ‘Against Metaphysics Running Amok: Hegel, Adorno, and the Ineffable.’ (2013) In: Lisa Herzog (ed.), The Many Colours of Hegelianism. Palgrave Macmillan. (Get!)

Further articles

  1. ‘About Mathematics and Disagreement’ (in German). (2020) Swiss Portal for Philosophy. – Get!
  2. ‘What mathematics can teach us about debating’ (in German). (2019) Süddeutsche Zeitung, Feuilleton, 7. January 2019. – Get!
  3. ‘Are questions about God rookie questions?’ (in German). (2019) Praefaktisch. A Philosophy Blog. – Get!
  4. ‘What’s hot in Mathematical Philosophy?’ (2018) The Reasoner, Vol. 12, No. 8. – Get!
  5. ‘Unspeakable things: Life’s most meaningful experiences can leave us tongue-tied. What can be said, let alone understood, about what’s unsayable?’ (2017). Aeon. A digital magazine of ideas and culture. – Get!
  6. ‘What Language Cannot Grasp’ (2017) Alaxon. A digital magazine for thoughts, articles of notes, and new ideas.Get!


  1. ‘God, Value, and Nature, by Fiona Ellis (OUP, 2015).’ Philosophy No. 91 Vol. 2 (2016): 281-284 (Get!)
  2. ‘Constructing the World, by David Chalmers (OUP, 2012).’ The Philosophical Quarterly Vol. 64 No. 257 (2014): 651-655 (Get!)
  3. ‘The Significance of Religious Experience, by Howard Wettstein (OUP, 2012).’ Religious Studies Vol. 50 No. 1 (2014): 119-123 (Get!)

Outreach – Television, Radio, Podcasts

  1. “Does Math Reveal Reality?” (2020) World Science Festival, New York – Panel discussion with Brian Greene, Max Tegmark, Sheldon Goldstein and David Albert – Watch!
  2. Interview with The Huffington Post (Spain) on Philosophy of Mathematics (2021). – Read!
  3. Podcast “How Maths Changed Philosophy” (2020) Spotify – Philosophy for Our Times Podcast Series (Link)
  4. Interview with Michel Friedman for his show ‘Auf ein Wort’ on the topic of mathematics (2019). Deutsche Welle. – Watch!
  5. ‘Lost in Language’. (2019) Podcast episode for the Institute of Art and Idea’s podcast Philosophy for our Times. Recording of a panel discussion with Saul Kripke, Hilary Lawson, Paul Boghossian, and Silvia Jonas at the HowtheLightGetsIn Festival at Hay-on-Wye. – Listen!
  6. ‘The Mathematics of Thought: How has mathematics changed philosophy?’ Talk given at the HowtheLightGetsIn Festival at Hay-on-Wye in May 2019. Broadcast by!
  7. ‘Are You An Illusion?’. (2019) Podcast episode for the Institute of Art and Idea’s podcast Philosophy for our Times. Recording of a panel discussion with Julian Baggini, Silvia Jonas, Joanna Kavenna, Hilary Lawson, and Jan Westerhoff at the HowtheLightGetsIn Festival at Hay-on-Wye. – Listen!
  8. Radio interview on ‘Learning from mathematics means learning discussion and pluralism’ (in German; 2019). Mitteldeutscher Rundfunk (MDR), 7. January 2019.
  9. Interview with the Templeton Foundation on the topic “God, Science, and Ineffable Knowledge” (2017) – Watch!
  10. Podcast of an interview with Carrie Figdor of on “Ineffability and its Metaphysics – The Unspeakable in Art, Religion, and Philosophy” (2016) – Listen!
  11. Book launch and panel discussion of “Ineffability and its Metaphysics – The Unspeakable in Art, Religion, and Philosophy”, with an introduction by Gabriel Motzkin and a comment by Olla Solomyak (Van Leer Institute, 2016) – Watch!