Page:Philosophical Review Volume 1.djvu/519

No. 5.] long as its great purpose is unfulfilled? The whole process of psychic evolution is a continuous transfer of function from less to more refined, complicated, and specialized vehicles. Our most recent science has opened to us the reality of an invisible world. It is certain that there are vibrations at both ends of the spectrum of light which we do not apprehend, because our organs of sight are not adapted to them. The ether is as real as ponderable matter. We are enabled to analyze the light of stars which were never beheld by human eye. Until we know more of what we call "matter" and "energy" than we do at present, who will be so adventurous as to say that the last vehicle to which psychic action can be transferred, and the only medium to which the unity of consciousness can be attached, are the ponderable but unstable compounds that constitute the living brain? It is true that experience here finds its limit and before our eager vision the curtain falls. But perhaps the ancient wisdom was not far from the heart of truth which inspired the poet to sing:—

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