Zen master Dōgen is renowned for being the first to extensively employ the term butsudō, meaning “the Way of Buddha”, within his seminal work, the Shōbōgenzō. Dōgen’s interpretation emphasises that Buddha's teachings are not merely a theoretical compilation of doctrines, but rather they embody practical realisation. Therefore, discussing Buddha’s teachings only holds meaning when approached as the actual practice of the Way of Realisation. As a consequence, the practice of Zen Buddhism is fundamentally understood as a rigorous journey encompassing immersive practice, scholarly study, and the realisation of spiritual perfection, usually under the guidance of a master. Dōgen’s teachings strongly underscore that achieving enlightenment requires strict adherence to moral conduct, including upholding precepts and letting go of worldly attachments.