“If during life the ultimate and desperate effort of the inner-self to reunite itself with the faintly-glimmering ray of its divine parent is neglected; if this ray is allowed to be more and more shut out by the thickening crust of matter, the soul, once freed from the body, follows its earthly attractions, and is magnetically drawn into and held within the dense fogs of the material atmosphere.
Then it begins to sink lower and lower, until it finds itself, when returned to consciousness, in what the ancient termed Hades. The annihilation of such a soul is never instantaneous; it may last centuries, perhaps; for nature never proceeds by jumps and starts, and the astral soul being formed of elements, the law of evolution must bide its time.
Then begins the fearful law of compensation, the Yinyouan of the Buddhists. This class of spirits are called the “terrestrial” or “earthly elementary”, in contradistinction to the other classes, as we have shown in the introductory chapter. In the East they are known as the “Brothers of the Shadow”.
Cunning, low, vindictive, and seeking to retaliate their sufferings upon humanity, they become, until final annihilation, vampires, ghouls, and prominent actors. These are the leading “stars” on the great spiritual stage of “materialization”, which phenomena they perform with the help of the more intelligent of the genuine-born “elemental” creatures, which hover around and welcome them with delight in their own spheres.
Henry Kunrath, the great German kabalist, has on a plate of his rare work, Amphitheatri Sapientiae AEternae, representations of the four classes of these human “elementary spirits.”
Once past the threshold of the sanctuary of initiation, once that an adept has lifted the “Veil of Isis”, the mysterious and jealous goddess, he has nothing to fear; but till then he is in constant danger.”
H. P. Blavatsky