Papers
・‘Molyneux’s Question and the Phenomenology of Shape’, a PhD thesis submitted to the University of Warwick, 2012.
・‘The Body as the Zero Point’, The Journal of the British Society for Phenomenology, Vol. 42, No. 3, 2011, pp. 329-334.
・‘Integration of the Visual, Auditory, and Bodily-Sensation Spaces’, Reflecting the Philosophical Concept of ‘Subject’: Report on the Research Projects, No. 101, H. Nagai (ed.), Graduate School of Social Sciences and Humanities, Chiba University, 2007, pp. 21-9.

Paper written in Japanese
‘Are Bodily Sensations Able to Locate the Body in Space?’, Philosophy (Tetsugaku): Annual Review of the Philosophical Association of Japan, No. 58, pp. 191-202.

Invited talks
・‘Does Motion Make Visual Perception Three-Dimensional?’,Tokyo Forum for Analytic Philosophy，University of Tokyo (Hongo Campus), 13th December 2013. (In English)
・‘What Has the Shape I See?’, The 3rd Philosophy Workshop, The Institute of Humanities and Social Sciences, Nihon University, 22nd March 2013. (In Japanese)

Presentations
・‘Philosophy for Everyone: Activities since 2013 and My Reflection’, University of Hawaii at Manoa, Uehiro Academy for Philosophy and Ethics in Education: Second International Seminar, 12th March 2014.
・‘Response to David Papineau, “Can We Really See a Million Colours?” ’, MindGrad 2010, Warwick Graduate Conference in the Philosophy of Mind, 5th December 2010.
・‘Response to Stephen Priest, “Metaphysical Questions” ’, Centre for Philosophy of Religion Seminar Series, Heythrop College, University of London, 2nd November 2010.
・‘Kitaro Nishida and Stephen Priest’, Faculty of Philosophy, University of Oxford, 11th December 2009.
・‘Response to Michael Inwood and Stephen Priest, “Philosophical Questions: Theological Answers” ’, Forum for European Philosophy, Faculty of Philosophy, University of Oxford, 14th October 2009.

Presentations in Japanese
・‘Universals and Particulars in Perception’, Yonsei University-UTCP International Conference ‘Problematizing “New Universality” in East Asia’, Organized by Uehiro Research Division for Philosophy of Coexistence, The University of Tokyo Center for Philosophy (UTCP), Co-organized by Contemporary Philosophy in the Age of Globalization (CPAG), University of Tokyo (Komaba Campus), 8th April 2014.
・‘A Kantian Answer to Molyneux's Question’, The 72nd Annual Meeting of the Philosophical Association of Japan, Ochanomizu University, 12th May 2013.
‘Does a Boundary Exist Internal to the Body Space?’, The 37th Annual Conference of Philosophy of Science Society, Japan, Kyoto University, 3rd October 2004.

Translation into Japanese
Stroud, B. (1984), The Significance of Philosophical Scepticism, Oxford University Press. (Joint translation. Published by Shunjusha in 2006.)

Translation into English
・Nagai, H., Why Isn’t Consciousness Real? (4), Philosophia OSAKA, No. 9, Osaka University, pp. 41-60, 2014.
・Nagai, H., Why Isn’t Consciousness Real? (3), Philosophia OSAKA, No. 8, Osaka University, pp. 37-51, 2013.
・Nagai, H., Why Isn’t Consciousness Real? (2), Philosophia OSAKA, No. 7, Osaka University, pp. 47-67, 2012.
・Nagai, H., Why Isn’t Consciousness Real? (1), Philosophia OSAKA, No. 6, Osaka University, pp. 41-61, 2011.
・Nagai, H., The Opening: A Philosophy of Actuality (4), Philosophia OSAKA, No. 5, Osaka University, pp. 23-40, 2010.
・Nagai, H., The Opening: A Philosophy of Actuality (3), Philosophia OSAKA, No. 4, Osaka University, pp. 1-29, 2009.
・Nagai, H., The Opening: A Philosophy of Actuality (2), Philosophia OSAKA, No. 3, Osaka University, pp. 1-24, 2008.
・Nagai, H., The Opening: A Philosophy of Actuality (1), Philosophia OSAKA, No. 2, Osaka University, pp. 45-61, 2007.

Other publications
・‘Hitoshi Nagai x Shogo Shimizu: Messages to Tesuo-kun’, Tetsugaku: Enjoyable Philosophy Magazine, Issue 1, 2011, pp. 51-4.
・‘Hitoshi Nagai x Shogo Shimizu: Messages to Tesuo-kun’, Tetsugaku: Enjoyable Philosophy Magazine, Issue 3, 2012, pp. 61-2.

Interpretation
・Mårten Spångberg, 'The Dancing Seminar', University of Tokyo (Komaba Campus), 12th October 2013.
・Lou Marinoff, 'The Role of Philosophical Practice in Business', University of Tokyo (Hongo Campus), 24th May 2013.
・Lou Marinoff, 'The Role of Philosophical Practice in Business', University of Tokyo (Hongo Campus), 22nd May 2013.
・Peter Harteloh, 'Philosophical Walk', Kanagawa Women's Center/ Enoshima, 18th May 2013.
・Peter Harteloh, 'Workshop on Philosophical Consultation', Rikkyo University (Ikebukuro Campus), 9th May 2013.