Spiritual magnetism is the most valuable magnetism there is, for it is the magnetism of the soul. But as soon as one begins to show one's lantern, however beautifully it burns, the oil will begin to give out and then the lantern will become dim. It is a human tendency that a little spiritual stimulus gives man such an inclination to show it that as soon as he gives an extensive expression to his spiritual awakening in the form of words or acts he loses magnetism, for the magnetism had not yet been prepared; it was not ready. It is as if a piece of coal before turning into a diamond already began to shine out; it would then remain as it was and could never become a diamond. The mystery is that magnetism is developed by use and controlled by reserve; one must know the right balance between how to develop it and how to preserve it.