'Yesod, the ninth Sephirah on the cabbalistic Tree of Life, is the symbol of a pure life. Taking purity as the basis of his spiritual teaching (Yesod means 'base' in Hebrew), Omraam Mikhaël Aïvanhov renews in our times the sense and significance of the ancient Initiations enriched by his own innumerable discoveries. He has personally practised and experimented at length with the rules and exercises he proposes for our use ; their purpose is to liberate man and awaken in every fibre of his being the vital, harmonious forces of Divine life.'
