Taisen Deshimaru’s way of transmitting Zen rested squarely on zazen as the living heart of the path. Seated meditation was not presented as preparation for something else, but as the direct expression of awakening itself, especially in the form of shikantaza, “just sitting,” without object or goal. Great care was given to posture, breathing, and mental attitude, so that body and mind could function as a unified whole. In this sense, the technical precision of sitting was not a mere formality, but the concrete embodiment of Buddha-nature in each moment.

At the same time, his teaching did not confine Zen to the meditation hall. He consistently emphasized that practice must permeate daily life—work, relationships, and ordinary activities—rather than remain an isolated spiritual exercise. Zen, as he presented it, was something to be lived in the midst of the world, not only in remote monasteries. This integration of formal practice and everyday conduct gave his approach a distinctly practical character, oriented toward direct experience rather than abstract speculation.

Deshimaru’s manner of teaching combined rigorous traditional discipline with a sensitivity to the European context in which he taught. He preserved the strict forms of Sōtō Zen—regular zazen, careful attention to form, and a demanding dojo atmosphere—while adapting his language and explanations so that Western practitioners could genuinely understand and engage with the practice. Within this framework, the teacher–student relationship and the idea of authentic lineage transmission were treated as central, not as matters of prestige, but as vehicles for conveying a living tradition.

Finally, he devoted considerable energy to building communities of practice. By founding dojos and encouraging collective zazen, he created environments where discipline, mutual support, and shared effort could mature over time. In these communities, zazen, work practice, and daily interactions were woven into a single fabric of training. Through this combination of strict form, accessible expression, and communal practice, his approach invited practitioners to let Zen suffuse the whole of their lives.