Leaves of Morya's Garden - Book 2 - Illumination (1925) - 2.9.2: One should not think that the elemental spirits are Our brood. Their manifestation may be likened to the spark at the moment of contact with a tense reservoir of dynamite. The consciousness of this spark becomes kindled upon contact with the human spirit. Of course their grade varies, as does the intensity of the dynamite's energy.