An introduction to an esoteric form of raja yoga which defines yoga as the science and art of developing human consciousness. It combines techniques for the body, mind and feeling and adds healing techniques to developmental ones. Apart from a new synthesis of traditional ideas original material addresses: why permanent Liberation is so difficult and presents a major development in Harmonic Matrix Cosmology based on Triads and Octaves. Also the appendix contains a detailed presentation of Non-Thing Theory - a model for the application and implementation of a radical discovery concerning the true nature of negative phenomena. This discovery validates the 'all-positives' observations of states of ecstasy while reconciling them with the common-sense observations of negatives.