This section is from the book "The Sacred Book Of Death", by Lauron William De Laurence. Also available from Amazon: The Sacred Book of Death - Hindu Spiritism Soul Transition and Soul Reincarnation.
In the phenomena of somnambulism, whether natural or self-induced, Providence furnishes us with undeniable proof of the existence and independence of the soul, by causing us to witness the sublime spectacle of its emancipation from the fetters of the body, and thus enabling us to read our future destiny as in an open book. When a somnambulist describes what is taking place at a distance, it is equally evident that he sees what he describes, and that he does not see it with his bodily eyes. He sees himself at that distant point, and he feels himself to be transported thither. Something of himself, therefore, is really present at that distant point; and that something, not being his body, can only be his soul or his spirit. While man, in search of the causes of his moral being, loses himself in abstract and unintelligible metaphysical subtleties, God places daily before his eyes, and within reach of his hand, the simplest and most certain means for the study of experimental psychology.
Trance is the state in which the soul's independence of the body is made most clearly visible, and, so to say, palpable, to the senses of the observer. In dreaming and somnambulism, the soul wanders among terrestrial worlds; in trance, it penetrates into a sphere of existence of another order, into that of the etherealized spirits with whom it enters into communication, without, however, being able to overstep certain limits which it could not pass without entirely breaking the links that attach it to the body. Surrounded by novel splendors, enraptured by harmonies unknown to earth, penetrated by bliss that defies description, the soul enjoys a foretaste of celestial beatitude, and may be said to have placed one foot on the threshold of eternity.
In the state of trance, the annihilation of corporeal ties is almost complete. The body no longer possesses anything more than organic life; and we feel that the soul is only held thereto by a single thread, which any further effort on its part would break forever.
In this state all earthly ties disappear, and give place to the purified perception that is the very as-sence of our immaterial being. Entirely absorbed in this sublime contemplation, the ecstatic regards the earthly life as being merely a momentary halt upon our eternal way; the successes and misfortunes of this lower world, its gross joys and sorrows, appear to him only as the futile incidents of a journey of which he is delighted to foresee the end.
It is with the ecstatic as with somnambulists; their lucidity may be more or less perfect, and their spirit, according as it is more or less elevated, is also more or less apt to apprehend the truth of things. In their abnormal state, there is sometimes more of nervous excitement than of true lucidity; or, to speak more correctly, their nervous excitement, impairs their lucidity and, for this reason, their revelations are often a mixture of truths and errors, of sublime ideas and absurd or even ridiculous fancies. Inferior spirits often take advantage of this nervous excitement (which is always a source of weakness to those who are unable to control it), in order to subjugate the ecstatic, and to this end they assume to his eyes the appearances which confirm him in the ideas and prejudices of his waking state. This subjugation of clairvoyants by the presentation of false appearances is the "rock ahead" of this order, of revealment. But all of them are not equally subject to this dangerous misleading; and it is for us to weigh their statements coolly and carefully, and to judge their revelations by the light of science and of reason.
 
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