If nervous energy is a complex form of electrical energy, then the brain in which this is stored is an electrical dynamo. Is this dynamo re-charged during sleep from some Occult Power-station? Since, in every equation of Science, an unknown factor reveals itself, why not candidly confess this to be a Spiritual factor? Spirit is no more a hypothetical medium than Ether is. And Science has been forced to assume the existence of Ether, as a basis for its calculations. Ether and Spirit are conceivably the same medium manifesting on different planes--the one of Physics, the other of Mind. IX According to Professor Clarapède: "The intellect appears only as a makeshift, an instrument which betrays that the organism is not adapted to its environment, a mode of expression which reveals a state of impotence." A saying which supports three clauses of my hypothesis: First, that the brain, with its tributary spinal-nervous system, is an instrument of Consciousness wholly differentiated from, and supplementary to the organism of Life. Secondly, that it is an instrument designed for the adaptation of the organism to environment (the rôle I have assigned, throughout, to the male). Thirdly, that the organism of Life is not itself adapted to its environment, and that, accordingly, Adaptation to Environment cannot be regarded as the impulse of Evolutionary development, since the living organism has so far failed to adapt itself to environment that it requires a highly specialised instrument to serve as medium between itself and its surroundings. That Intellect--being an instrument by way of which Life is adapted to environment, as also, on the other hand, by way of which environment is adapted to Life--is a makeshift that "reveals a state of impotence" is not to be admitted, however, in view of the fact that it is an instrument which preserves Life from developing along the lines of its environment; an adaptation which would necessarily involve lapse from typal ideals. Intelligence taught man, in place of so adapting to environment as to have developed the fist of a gorilla (which at a blow can crack a human skull), to arm himself with a club. And by thus adapting environment to his evolutionary requirements, he conserved his resources and applied them to development along higher lines. Such impotence as may be, arises out of the undevelopment of a rudimentary organism. Of an organism in course of development, however. In the meanwhile, both man and woman are provided, in their hybrid constitution, with the "makeshift" of an instrument of opposite sex, which supplies both with the powers neither has yet developed in himself or herself; but without which neither is able to exist or to function.