“Of late, some of our learned men have given a particular attention to a subject hitherto branded with the mark of “superstition”. They begin speculating on hypothetical and invisible worlds. The authors of the Unseen Universe were the first to boldly take the lead, and already they find a follower in Professor Fiske, whose speculations are given in the Unseen World.
Evidently the scientists are probing the insecure ground of materialism, and, feeling it trembling under their feet, are preparing for a less dishonorable surrender of arms in case of defeat. Jevons confirms Babbage, and both firmly believe that every thought, displacing the particles of the brain and setting them in motion, scatters them throughout the universe, and think that “each particle of the existing matter must be a register of all that has happened.”
On the other hand, Dr. Thomas Young, in his lectures on natural philosophy, most positively invites us to “speculate with freedom on the possibility of independent worlds; some existing in different parts, others pervading each other, unseen and unknown, in the same space, and others again to which space may not be a necessary mode of existence.”
H. P. Blavatsky