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...rays, as compared to the invisible part which stretches indefinitely on either side. We know now that the chief part of heat comes from the infrared original: "ultra-red" rays that show no light; and the main part of the chemical changes in the vegetable world are the results of the ultraviolet rays at the other end of the spectrum, which are equally invisible to the eye and are recognized only by their powerful effects. Indeed, as these invisible rays extend indefinitely on both sides of the visible spectrum, so we may say that the mind includes not only the visible or conscious part—and what we have termed the subconscious, which lies below the red line—but also the supra-conscious mind that lies at the other end. This includes all those regions of higher soul and spirit life of which we are only at times vaguely conscious, but which always exist and link us to eternal truths original: "eternal verities" on the one side, as surely as the subconscious mind links us to the body on the other.
The late Frederic W. H. Myers Frederic W. H. Myers (1843–1901) was a British classicist and a pioneer in the field of psychology. He was a founding member of the Society for Psychical Research and is best known for his work on the "subliminal self.", after years of careful study and research into states of mind outside of normal awareness, formulated a hypothesis of a “secondary self,” or as he called it, a Subliminal Self Subliminal Self: From the Latin sub (under) and limen (threshold); this refers to a part of the mind that exists below the threshold of conscious awareness.. Myers held that this "self" possessed certain powers which it exercised to some degree independently of the ordinary conscious "self." Perhaps the best explanation of his hypothesis has been stated by Mr. Myers himself in his book entitled Human Personality... The text here cuts off; the full title is Human Personality and Its Survival of Bodily Death, published posthumously in 1903.