“Says Proclus: “Many other of the ancients have collected a history of those that have apparently died, and afterward revived. Among these is the natural philosopher Demokritus.
In his writings concerning Hades, he affirms that [in a certain case under discussion] death was not, as it seemed, an entire desertion of the whole life of body, but a cessation caused by some blow, or perhaps a wound; but the bonds of the soul yet remained rooted about the marrow, and the heart contained in its profundity the empyreuma of life; and this remaining, it again acquired the life, which had been extinguished, in consequence of being adapted to animation.”
He says again, “That it is possible for the soul to depart from and enter into the body, is evident from him, who, according to Clearchus, used a soul-attracting wand on a sleeping boy; and who persuaded Aristotle, as Clearchus relates in his Treatise on Sleep, that the soul may be separated from the body, and that it enters into a body and uses it as a lodging.
For, striking the boy with the wand, he drew out, and, as it were, led his soul, for the purpose of evincing that the body was immovable when the soul (astral body) was at a distance from it, and that it was preserved uninjured; but the soul being again led into the body by means of the wand, after its entrance, narrated every particular. From this circumstance, therefore, both the spectators and Aristotle were persuaded that the soul is separate from the body.””
H. P. Blavatsky