“Iron is only magnetized temporarily, but steel permanently, by contact with the lodestone. Now steel is but iron which has passed through a carbonizing process, and yet that process has quite changed the nature of the metal, so far as its relations to the lodestone are concerned. In like manner, it may be said that the medium is but an ordinary person who is magnetized by influx from the astral light; and as the permanence of the magnetic property in the metal is measured by its more or less steel-like character, so may we not say that the intensity and permanency of mediumistic power is in proportion to the saturation of the medium with the magnetic or astral force?
This condition of saturation may be congenital, or brought about in anyone of these ways: by the mesmeric process; by spirit agency; or by self-will. Moreover, the condition seems hereditable, like any other physical or mental peculiarity; many, and we may even say most great mediums having had mediumship exhibited in some form by one or more progenitors.
Mesmeric subjects easily pass into the higher forms of clairvoyance and mediumship (now so called), as Gregory, Deleuze, Puysegur, Du Potet, and other authorities inform us. As to the process of self-saturation, we have only to turn to the account of the priestly devotees of Japan, Siam, China, India, Tibet, and Egypt, as well as of European countries, to be satisfied of its reality.
Long persistence in a fixed determination to subjugate matter, brings about a condition in which not only is one insensible to external impressions, but even death itself may be simulated, as we have already seen. The ecstatic so enormously reinforces his will-power, as to draw into himself, as into a vortex, the potencies resident in the astral light to supplement his own natural store.
The phenomena of mesmerism are explicable upon no other hypothesis than the projection of a current of force from the operator into the subject. If a man can project this force by an exercise of the will, what prevents his attracting it toward himself by reversing the current? Unless, indeed, it be urged that the force is generated within his body and cannot be attracted from any supply without.
But even under such a hypothesis, if he can generate a superabundant supply to saturate another person, or even an inanimate object by his will, why cannot he generate it in excess for self-saturation?”
H. P. Blavatsky