There are scientists and _scientists_; and if the occult sciences suffer in the instance of modern spiritualism from the malice of one class, nevertheless, they have had their defenders at all times among men whose names have shed lustre upon science itself. In the first rank stands Isaac Newton, “the light of science,” who was a thorough believer in magnetism, as taught by Paracelsus, Van Helmont, and by the fire-philosophers in general. No one will presume to deny that his doctrine of universal space and attraction is purely a theory of magnetism. If his own words mean anything at all, they mean that he based all his speculations upon the “soul of the world,” the great universal, magnetic agent, which he called the _divine sensorium_.[303] {178} “Here,” he says, “the question is of a very subtile spirit which penetrates through all, even the hardest bodies, and which is concealed in their substance. Through the strength and activity of this spirit, bodies attract each other, and adhere together when brought into contact. Through it, electrical bodies operate at the remotest distance, as well as near at hand, attracting and repelling; through this spirit the light also flows, and is refracted and reflected, and warms bodies. All senses are excited by this spirit, and through it the animals move their limbs. But these things cannot be explained in few words, and we have not yet sufficient experience to determine fully the laws by which this universal spirit operates.” There are two kinds of magnetization; the first is purely _animal_, the other transcendent, and depending on the will and knowledge of the mesmerizer, as well as on the degree of spirituality of the subject, and his capacity to receive the impressions of the astral light. But now it is next to ascertain that clairvoyance depends a great deal more on the former than on the latter. To the power of an adept, like Du Potet, the most _positive_ subject will have to submit. If his sight is ably directed by the mesmerizer, magician, or spirit, the light must yield up its most secret records to our scrutiny; for, if it is a book which is ever closed to those “who see and do not perceive,” on the other hand it is ever opened for one who _wills_ to see it opened. It keeps an unmutilated record of all that was, that is, or ever will be. The minutest acts of our lives are imprinted on it, and even our thoughts rest photographed on its eternal tablets. It is the book which we see opened by the angel in the _Revelation_, “which is the Book of life, and out of which the dead are judged according to their works.” It is, in short, the MEMORY of GOD! “The oracles assert that the impression of thoughts, characters, men, and other divine visions, appear in the æther.... In this the things without figure are figured,” says an ancient fragment of the _Chaldean Oracles_ of Zoroaster.[304]