6. The element in which spirits act, and the means of execution being different from those employed during the incarnation, the effects are different. These effects only appear supernatural because they are produced through agents, who are not those by means of which men serve themselves; but from the instant when it is known that these agents are natural, and that the manifestations occur in obedience to laws, there is nothing supernatural or marvelous about them. Before the properties of electricity were known, the electricity phenomenon was regarded as miraculous by certain people. As soon as the cause was known, the miracle vanished. It is the same with spiritual phenomena, which arise no more from the setting aside of nature’s laws than do the electrical, acoustic, luminous, and other phenomena which have given rise to a crowd of superstitions.