“This is not our philosophy, but that of the numberless generations of theurgists and magicians, and based upon their practical experience. The testimony of antiquity is positive on this subject: Δαιμονιοιν φοναι αναρΘροι εισι…. The voices of spirits are not articulated.
The spirit-voice consists of a series of sounds which conveys the impression of a column of compressed air ascending from beneath upward, and spreading around the living interlocutor.
The many eye-witnesses who testified in the case of Elizabeth Eslinger, namely: the deputy governor of the prison of Weinsberg, Mayer, Eckhart, Theurer, and Knorr (sworn evidence), Duttenhofer, and Kapff, the mathematician, testified that they saw the apparition like a pillar of clouds.
For the space of eleven weeks, Doctor Kerner and his sons, several Lutheran ministers, the advocate Fraas, the engraver Duttenhofer, two physicians, Siefer and Sicherer, the judge Heyd, and the Baron von Hugel, with many others, followed this manifestation daily.
During the time it lasted, the prisoner Elizabeth prayed with a loud voice uninterruptedly; therefore, as the “spirit” was talking at the same time, it could be no ventriloquism; and that voice, they say, “had nothing human in it; no one could imitate its sounds.””
H. P. Blavatsky