His works include "Tetsugaku Nyumon" (An Introduction to Philosophy), "Tetsugaku Tsuron" (An Outline of Philosophy) and "Zangedo to Shite no Tetsugaku" (Philosophy as Metanoia).
著書に、『哲学入門』、『哲学通論』、『懺悔道としての哲学』などがある。