Until recently, everything known about Zen in the Spanish-speaking world came from a few purely theoretical books. For the first time, the teachings of an authentic Zen master are published, a teaching that until then had only been transmitted orally. The book also contains two sacred texts: the Hokyo Zan Mai and the San Do Kai; texts from the most remote Chinese antiquity, and which are considered the basis of current Japanese Zen. It also includes the Teisho, a teaching given to disciples during Za-Zen.

Za-Zen or Zen in a sitting position, is the practice of the posture of wakefulness, the practice of awakening. This awakening cannot be dissociated from the practice of Zen itself. Its teaching, deeply rooted in the concrete, aims at a psychophysiological transformation of the individual and has today proven to be singularly effective. Zen is not a set of ideas that can be learned but essentially an experience that must be carried out. It is a discipline of concentration and meditation whose essence apparently dates back to the enlightenment of Buddha.