People’s lives, their spiritual development and evolution, are based on their power to transform both physical and psychic matter. Nutrition offers us the most instructive example. How can we help but be amazed by all the complex and subtle processes that take place from the moment we put a piece of bread or fruit in our mouth until the quintessence of these nutrients enters our blood to become vitality, thought, feeling, inspiration? We can also transform everything on the psychic plane, and this goes even further… Yes, save for exceptional cases, the physical organism cannot absorb just any substance, and we must always remove something from it or add something to it. But on the psychic plane everything can be absorbed and transformed, not only the raw energies we carry within us in the form of passions and vices but the poisons that come to us from the outside.