"Except for the purposes of scientific investigation, or with a view to strengthening ourselves against the silent and mysterious promptings to evil that beset us on every side, we warn mere curiosity-seekers, or persons ambitious to attach the legions of an unknown world to their service, against any attempts to seek communion with elemental spirits, or beings of any grade lower than man. _Beings below mortality can grant nothing that mortality ought to ask._ They can only serve man in some embryonic department of nature, and man must stoop to their state before they can thus reach him.... Knowledge is only good for us when we can apply it judiciously. Those who investigate for the sake of science, or with a view to enlarging the narrow boundaries of man's egotistical opinions, may venture much further into the realms of the unknown than curiosity-seekers, or persons who desire to apply the secrets of being to selfish purposes. It may be as well also for man to remember that he and his planet are not _the all_ of being, and that, besides the revelations included in the stupendous outpouring called 'Modern Spiritualism,' there are many problems yet to be solved in human life and planetary existences, which spiritualism does not cover, nor ignorance and prejudice dream of.... Besides these considerations, we would warn man of the many subtle, though invisible, enemies which surround him, and, rather by the instinct of their embryonic natures than through _malice prepense_, seek to lay siege to the garrison of the human heart. We would advise him, moreover, that into that sacred entrenchment no power can enter, save by invitation of the soul itself. Angels may solicit, or demons may tempt, but none can compel the spirit within to action, unless it first surrenders the _will_ to the investing power."--(_Art Magic_, p. 335.) From the _Theosophist_ of July 1886, we make the following extract, bearing upon the subject of the loss of immortality by soul-death, and the dangers of Black Magic: