SummaryIn the circle of initiates, the masters, guardians of a knowledge at the frontier of a here and an elsewhere, navigate between the fear and the fascination that they trigger in their surroundings. Fear, facing the incomprehension of their Universe, fascination, addressing their expressive power. In this paradox lies the access to the confidential World of the mastery. However, this is not about some eccentricity of the artist's madness, but a singular knowledge that emanates from the mastery of Art; expressed through simplicity, naturalness, authenticity. This book deals with this ability to evolve in the dimension of mastery, what it costs in efforts and sacrifices; an availability illustrated in very distinct practices, but yet so close, that of Ka, traditional Guadeloupean drum, and Kendo, traditional Japanese fencing.