Jojan Jonker reconstructs the spirituality of a Japanese spiritual healing practice of the 1920s, Reiki, and places this in the Japanese socio-cultural context. Next he describes the development of this spirituality during its migration to North America (1930s) and eventually to the Netherlands (1980s). He argues that many elements of a spirituality belong to the practitioners' natural habitat and do not migrate with a given practice to other places with different socio-cultural backgrounds, and consequently the spirituality changes. Surprisingly enough, Western esoteric traditions influenced...