Universiteit Leiden

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Catharine Diehl

University Lecturer Theoretical Philosophy

Dr. C.E. Diehl
+31 71 527 2727

Catharine Diehl’s research concerns metaphysics and its relation to logic. Her dissertation, “Ontological Nihilism and Existential Commitment,” undertakes a systematic investigation of ontological nihilism, the view that it is not the case that individuals are part of the basic fabric of the world. Several of her publications grow out of aspects of this project. Currently, she is working on several projects concerning principles of individuation, the logic of identity, and the phenomenon of inexpressible ignorance. She's also working on a defence of arbitrary reference.

More information about Catharine Diehl

Fields of interest

  • metaphysics
  • philosophy of logic
  • Kant
  • Leibniz 

Key publications

  • 'The Metaphysics of Opacity' (with Beau Madison Mount), Philosophers' Imprint (forthcoming)
  • 'Haecceitism without Individuals',
    Inquiry: An Interdisciplinary Journal of Philosophy (2022)
  • 'A Language for Ontological Nihilism', Ergo (2018)
  • 'Versteckte Zahlen,' Zeitschrift für philosophische Forschung (2016)
  • 'Antwort auf Gabriel' (with Tobias Rosefeldt), Philosophisches Jahrbuch (2016)
  • 'Gibt es Gabriels neuen Realismus?' (with Tobias Rosefeldt), Philosophisches Jahrbuch (2015)
  • The Demand for an End: Kant and the Invention of Historical Time,'  in Anna Glazova and Paul North, eds., Messianic Thought Outside Theology, Fordham University Press (2014)

University Lecturer Theoretical Philosophy

  • Faculty of Humanities
  • Instituut voor Wijsbegeerte

Work address

P.J. Veth
Nonnensteeg 1-3
2311 VJ Leiden



  • No relevant ancillary activities
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