True it is that the phenomena of dream, while throwing so much light upon the structure of the mind and the manner of its action and going far to prove the existence of Soul, does not impart to us any knowledge of the structure of Soul. But we may learn this much, that although it is imperceptible by any of our senses, which are constructed to perceive only that form of matter we call molecular, it is not also and therefore unknowable, as the materialists contend. The existence of Soul can be proved in precisely the same manner as the existence of electricity and magnetism and heat are proved, which also are imperceptible by our senses, but not therefore unknowable. We learn the fact of their being by their operations upon the molecular structure our senses are constructed to perceive. In like manner we learn something of their qualities and powers. The process of proof is identical. If it be admissible evidence for the one, it is no less admissible for the other. To what extent it goes in the way of proof of the existence of Soul is, of course, a fair question for argument and investigation. My contention is only that the inquiry “if Soul be” must not be permitted to be summarily disposed of by any such dogmatic dictum of Physicists as that Soul not being perceptible to our senses is incapable of proving its existence through the senses, and therefore is, and must ever remain, unknowable and consequently a vain pursuit and an impossible Science. In the phenomena of dream we find abundant proof that there is something other than the sleeping molecular structure that does not sleep—that the individual “I” preserves its consciousness of identity, its sense of oneness in dream. This something cannot well be the body contemplating itself—at once the actor and the spectator. Reason concludes that it must be one thing contemplating another thing and Psychology contends that this contemplating thing that wakes and dreams when the body is asleep is what has been called by many names, but which here is designated as “Soul,” without affirming anything of its structure, its nature, its qualities, or its destiny.