Suppose a perfect stranger came into your office and proceeded to give orders to your staff. Suppose a strange woman walked into your drawing room and insisted on being hostess. You would be troubled by this. Yet, people sit down and offer the use of their brains and hands (which are, after all, more important than offices and drawing rooms) to any stray intelligence that may be wandering about. People use the Ouija Board without taking the slightest precautions.
The establishment of the identity of a spirit by ordinary methods is a very difficult problem, but the majority of people who play at Occultism do not even worry about this. They get something, and it does not seem to matter what! Every inanity, every stupidity, every piece of rubbish, is taken not only at its face value, but at an utterly exaggerated value. The most appallingly bad poetry will pass for Shelley, if only its authentication be that of the planchette! There is, however, a good way of using this instrument to get what you want, and that is to perform the whole operation in a consecrated circle, so that undesirable aliens cannot interfere with it. You should then employ the proper magical invocation in order to get into your circle just the one spirit that you want. It is comparatively easy to do this. A few simple instructions are all that is necessary, and I shall be pleased to give these, free of charge, to any one who cares to apply.
It is not particularly easy to get the spirit of a dead man, because the human soul, being divine, in not amenable to the control of other human souls; and it is further not legitimate or desirable to do it. But what can be done is to pick up the astral remains of the dead man from the Akasha and to build them up into a concrete mind. This operation, again, is not particularly profitable. The only legitimate work in this line is to get into touch with the really high intelligences, such as we call for convenience Gods, Archangels, and the like. These can give real information as to what is most necessary for our progress. And it is written in the Oracles of Zoroaster that unto the Persevering Mortal the Blessed Immortals are swift.