Materialism indeed insists that, whatever the extension of consciousness, it is a material phenomenon inseparable from our physical organs and not their utiliser but their result. This orthodox contention, however, is no longer able to hold the field against the tide of increasing knowledge. Its explanations are becoming more and more inadequate and strained. It is becoming always clearer that not only does the capacity of our total consciousness far exceed that of our organs, the senses, the nerves, the brain, but that even for our ordinary thought and consciousness these organs are only their habitual instruments and not their generators. Consciousness uses the brain which its upward strivings have produced, brain has not produced nor does it use the consciousness. There are even abnormal instances which go to prove that our organs are not entirely indispensable instruments, -that the heart-beats are not absolutely essential to life, any more than is breathing, nor the organised brain-cells to thought. Our physical organism no more causes or explains thought and consciousness than the construction of an engine causes or explains the motive-power of steam or electricity. The force is anterior, not the physical instrument.
         Momentous logical consequences follow. In the first place we may ask whether, since even mental consciousness exists where we see inanimation and inertia, it is not possible that even in material objects a universal subconscient mind is present although unable to act or communicate itself to its surfaces for want of organs. Is the material state an emptiness of consciousness, or is it not rather only a sleep of consciousness -even though from the point of view of evolution an original and not an intermediate sleep? And by sleep the human example teaches us that we mean not a suspension of consciousness, but its gathering inward away from conscious physical response to the impacts of external things. And is not this what all existence is that has not yet developed means of outward communication with the external physical world? Is there not a Conscious Soul, a Purusha who wakes for ever even in all that sleeps?
    We may go farther. When we speak of subconscious mind, we should mean by the phrase a thing not different from the outer mentality , but only acting below the surface, unknown to the waking man, in the same sense if perhaps with a deeper plunge and a larger scope. But the phenomena of the subliminal self far exceed the limits of any such definition. It includes an action not only immensely superior in capacity , but quite different in kind from what we know as mentality in our waking self. We have therefore aright to suppose that there is a superconscient in us as well as a subconscient, a range of conscious faculties and therefore an organisation of consciousness which rise high above that psychological stratum to which we give the name of mentality .And since the subliminal self in us thus rises in superconscience above mentality , may it not also sink in subconscience below mentality? Are there not in us and in the world forms of consciousness which are submental, to which we can give the name of vital and physical consciousness? If so, we must suppose in the plant and the metal also a force to which we can give the name of consciousness although it is not the human or animal mentality for which we have hitherto preserved the monopoly of that description.
       Not only is this probable but, if we will consider things dispassionately, it is certain. In ourselves there is such a vital consciousness which acts in the cells of the body and the automatic vital functions so that we go through purposeful movements and obey attractions and repulsions to which our mind is a stranger. In animals this vital consciousness is an even more im- portant factor. In plants it is intuitively evident. The seekings and shrinkings of the plant, its pleasure and pain, its sleep and its wakefulness and all that strange life whose truth an Indian scientist has brought to light by rigidly scientific methods, are all movements of consciousness, but, as far as we can see, not of mentality . There is then a submental, a vital consciousness which has precisely the same initial reactions as the mental, but is different in the constitution of its self-experience, even as that which is superconscient is in the constitution of its self-experience different from the mental being.
       Does the range of what we can call consciousness cease with the plant, with that in which we recognise the existence of a sub-animal life? ...
       But there is no reason to suppose that the gamut of life and consciousness fails and stops short in that which seems to us purely material. The development of recent research and thought seems to point to a sort of obscure beginning of life and perhaps a sort of inert or suppressed consciousness in the metal and in the earth and in other "inanimate" forms, or at least the first stuff of what becomes consciousness in us may be there. Only while in the plant we can dimly recognise and conceive the thing that I have called vital consciousness, the consciousness of Matter, of the inert form, is difficult indeed for us to understand or imagine, and what we find it difficult to understand or imagine we consider it our right to deny. Nevertheless, when one has pursued consciousness so far into the depths, it becomes incredible that there should be this sudden gulf in Nature. Thought has a right to suppose a unity where that unity is confessed by all other classes of phenomena and in one class only, not denied, but merely more concealed than in others. And if we suppose the unity to be unbroken, we then arrive at the existence of consciousness in all forms of the Force which is at work in the world. Even if there be no conscient or superconscient Purusha inhabiting all forms, yet is there in those forms a conscious force of being of which even their outer parts overtly or inertly partake.
  ... we may now be sure that the old thinkers were right when they declared that even in our waking state what we call then our consciousness is only a small selection from our entire conscious being. It is a superficies, it is not even the whole of our mentality. Behind it, much vaster than it, there is a subliminal or subconscient mind which is the greater part of ourselves and contains heights and profundities which no man has yet measured or fathomed.