Against the backdrop of various interpretations and criticisms of Michel Foucault’s engagement with Buddhism, the focus of this article falls on the specific type of Zen Buddhism which he studied during his 1978 trip to Japan, and the possible relationship between its dynamics and those of his own research trajectory following the publication of The Will to Knowledge. In this regard, Foucault’s eschewal of the Engaged Buddhism of Thich Nhat Hanh and the Zen Buddhism of Taisen Deshimaru—both of which had (...) risen to prominence in France by the late 1970s— and his concomitant interest instead in the teachings of Zen Master Omori Sōgen, in which Zen and the samurai code of bushidō were closely aligned, will be examined. Moreover, it will be argued that such preference on Foucault’s part was indicative of his eminently practical, rather than general philosophical, interest in Buddhism as a technology for the adversarial repositioning of subjectivity in relation to discourse. Finally, the implications of this for the abovementioned various interpretations and criticisms of Foucault’s engagement with Buddhism, will be considered. (shrink)