“The ancients, who named but four elements, made of aether a fifth one. On account of its essence being made divine by the unseen presence it was considered as a medium between this world and the next. They held that when the directing intelligences retired from any portion of ether, one of the four kingdoms which they are bound to superintend, the space was left in possession of evil.
An adept who prepared to converse with the “invisibles”, had to know well his ritual, and be perfectly acquainted with the conditions required for the perfect equilibrium of the four elements in the astral light.
First of all, he must purify the essence, and within the circle in which he sought to attract the pure spirits, equilibrize the elements, so as to prevent the ingress of the elementaries into their respective spheres.
But woe to the imprudent inquirer who ignorantly trespasses upon forbidden ground; danger will beset him at every step. He evokes powers that he cannot control; he arouses sentries which allow only their masters to pass.
For, in the words of the immortal Rosicrucian, “Once that thou hast resolved to become a cooperator with the spirit of the living God, take care not to hinder Him in His work; for, if thy heat exceeds the natural proportion thou hast stirr’d the wrath of the Moyst natures, and they will stand up against the central fire, and the central fire against them, and there will be terrible division in the chaos.”
The spirit of harmony and union will depart from the elements, disturbed by the imprudent hand; and the currents of blind forces will become immediately infested by numberless creatures of matter and instinct – the bad daemons of the theurgists, the devils of theology; the gnomes, salamanders, sylphs, and undines will assail the rash performer under multifarious aerial forms.
Unable to invent anything, they will search your memory to its very depths; hence the nervous exhaustion and mental oppression of certain sensitive natures at spiritual circles. The elementals will bring to light long-forgotten remembrances of the past; forms, images, sweet mementos, and familiar sentences, long since faded from our own remembrance, but vividly preserved in the inscrutable depths of our memory and on the astral tablets of the imperishable “BOOK OF LIFE.””
H. P. Blavatsky