This is the English translation of a compilation of edited transcriptions of recordings of various teachings given by the much-missed great Shangpa and Karma Kagyu master around the world. It appeared first in French and it contains some unfortunate and misleading errors (ignored for did not know, etc.) that give the impression that it was somewhat rushed into print, but no wonder. It is a true treasure. It is the third in a set: Excellent Buddhism concerning this master's own life and experiences, and Profound Buddhism about the general Hinayana-to-Mahayana approach are the other two. It is salted with many traditional accounts of the efficacy of the tantric (yoga) approach to the Dharma while placing it firmly within orthodox Buddhism. There is an explanation of the various classes of tantra, details of the preliminary (preparatory) practices and many other topics. Here is what you always wanted to know about the radical approach that is the Vajrayana taught in a straightforward and sensitive fashion.