Sōtō Zen is one of the principal schools of Zen Buddhism in Japan, distinguished by its emphasis on *shikantaza*, often rendered as “just sitting.” In this form of meditation, there is no special object of focus, no mantra, and no deliberate attempt to manipulate the mind; one simply sits in open, nonjudgmental awareness as thoughts and sensations arise and pass away. This style of practice reflects a deep trust that awakening is not something added from outside, but is already inherent and can be revealed through wholehearted sitting. Rather than treating meditation as a technique to gain a future result, Sōtō Zen understands the very act of sitting as the direct expression of Buddha-nature.

Within this tradition, the relationship between practice and enlightenment is viewed as non-dual: practice is not a ladder leading somewhere else, but the living manifestation of realization itself. Everyday activities—eating, working, cleaning—are likewise regarded as fields in which this realization is enacted, so that the ordinary rhythms of life become continuous practice. In this way, Sōtō Zen presents a path where the sacred is not separated from the mundane, and where each moment, fully inhabited, is understood as complete in itself.

Dōgen (1200–1253) stands at the heart of this school’s emergence in Japan. Having trained in China under a Caodong master, he transmitted that lineage to Japan and is honored as the founder of Japanese Sōtō Zen. His major work, the *Shōbōgenzō* (“Treasury of the True Dharma Eye”), articulates key themes such as the unity of practice and enlightenment and a subtle vision of existence and time in which each moment wholly embodies reality. Through these writings, he gave Sōtō Zen its distinctive doctrinal shape and a philosophical depth that continues to guide its practitioners.

Dōgen also established Eiheiji monastery and set in place the forms of monastic discipline, ritual, and meditation that came to characterize Sōtō Zen training. The school’s characteristic reliance on *shikantaza*, its understanding that sitting itself is the expression of Buddha-nature, and its institutional patterns of practice all trace back to his insight and example. In this sense, Sōtō Zen in Japan can be seen as the unfolding of Dōgen’s realization: a way of life in which simply sitting, and simply living, are already the path of awakening.