Further on we will give abundant proofs from ancient authors concerning this neglected truism. We will now only again assert that no spirit claimed by the spiritualists to be human was ever proved to be such on sufficient testimony. The influence of the _disembodied_ ones can be felt, and communicated _subjectively_ by them to sensitives. They can produce _objective_ manifestations, but they cannot produce _themselves_ otherwise than as described above. They can control the body of a medium, and express their desires and ideas in various modes well known to spiritualists; but not _materialize_ what is matterless and purely spiritual—their _divine essence_. Thus every so-called “materialization” when genuine—is either produced (_perhaps_) by the will of that spirit whom the “appearance” is claimed to be but can only personate at best, or by the elementary goblins themselves, which are generally too stupid to deserve the honor of being called devils. Upon rare occasions the spirits are able to subdue and control these {69} soulless beings, which are ever ready to assume pompous names if left to themselves, in such a way that the mischievous spirit “of the air,” shaped in the real image of the _human_ spirit, will be moved by the latter like a marionette, and unable to either act or utter other words than those imposed on him by the “immortal soul.” But this requires many conditions generally unknown to the circles of even spiritualists most in the habit of regularly attending seances. Not every one can attract _human_ spirits who likes. One of the most powerful attractions of our departed ones is their strong affection for those whom they have left on earth. It draws them irresistibly, by degrees, into the current of the Astral Light vibrating between the person sympathetic to them and the Universal Soul. Another very important condition is harmony, and the magnetic purity of the persons present.