Rabbi Noson Weisz explains the power of words:
The Goan of Vilna explains how this spirit — man’s power of speech — is the locus of man’s essential being. For it is only in this area that man is conscious. Beneath this spirit are man’s physical urges which are all subconscious.
(We do not consciously move the blood through our veins, or command our lungs to draw breath or our stomachs to digest.) Above this spirit is man’s soul through which he is attached to God, the higher aspect of man’s being of which he is also consciously unaware. In the middle, between these two areas of sub-consciousness, is man’s spirit, where his thoughts that have been put into words and his emotions are located. This area is the only place where he is self-conscious.
Between the areas of sub-consciousness lies man’s spirit, where his thoughts transformed into words are located.
Thus, the battles of life and its conflicts are all located here.
Man’s soul attempts to pull him upwards so that the spiritual power in his words becomes entirely dedicated to the expression of his soul. In terms of the universe, this would amount to attaching man’s spirit to the upper side of the interface of God’s words, which hang suspended between the heavens and the earth.
The physical urges attempt to pull man down to their level so that the spiritual power of his words is entirely turned over to the satisfaction of physical desires. In terms of the universe this would amount to separating man’s words from the words of God, and pulling them downwards to become mired in the corporeal universe.
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