• Goethe University Frankfurt/Main, 23 January 2013: "Kants Kompatibilismus und dessen frühmoderner Hintergrund".

• Philosophy Club, St Andrews University 7 November 2012: "Kant's Compatibilism and Its Early Modern Background."

• Staff Seminar, St Andrews University 17 October 2012: "Hegel's Critique of the Moral Standpoint."

• Moral Psychology Research Group, Keio University Tokyo, 10 December 2011: "Moore on Goodness: Reflections on the Open Question Argument".
• Kant Research Group Tokyo, Hosei University, 26 June 2011: "Concursus and (the totality of) causal conditions: reconsidering the thesis argument of the 3rd antinomy".
• University of Amsterdam, 16 March 2011: "Kant's Version of Compatibilism: Traces of Molina?"
• XIth International Kant Congress, Pisa, 26 May 2010: "Nothing but Representations" - A Suárezian Way out of the Mind?".
• Asientreffen der Studienstiftung des deutschen Volkes, Tokyo, 6 June 2009: "Aspekte des moralischen Relativismus in der allgemeinen und angewandten Ethik".
• British Society for the History of Philosophy Annual Conference "History and Nature of Transcendental Philosophy", Manchester 18 April 2009: "Kant's Scholastic Conception of the Divine Intellect and the Distinction between Things in Themselves and Appearances".
• Kant Research Group Tokyo, 29 January 2009 (Hosei University): "Squaring the Circle: The Distinction(s) between Things in Themselves and Appearances in Kant."
• Phenomenology and Ontology Conference, 4 July 2008 (Keio University): "Divine Cognition and Things in Themselves: Combining the Two-World and the Two-Aspect View of Transcendental Idealism".
• Co-Convenor of the symposium "On Good Terms with the World: Virtue, Reason, and Reality", Tokyo 6 March 2008
• Convenor of "Conceptions of Moral Realism: Recent Devolopments", a compact course in metaethics for graduate students given by Stelios Virvidakis (Athens) at Keio University, 3-5 March 2008.
• Foundation Congress of The European Society for Early Modern Philosophy, Essen (Germany), 29 March 2007: "Freedom and Natural (Physical) Laws: The Roots of Trancendental Idealism in Early Modern Philosophy".
• Kant Research Group, Tokyo, 29 October 2006 (Waseda University, Tokyo): "Secondary Causes and the Moral Law: Sketches of a Strong Metaphysical Reading of Grundlegung III".

(Selection)