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“Language and hearing are seated in the cerebral cortex, the folded gray matter that covers the first couple of millimeters of the outer brain like wrapping paper. When one experiences silence, absent even reading, the cerebral cortex typically rests. Meanwhile, deeper and more ancient brain structures seem to be activated--the subcortical zones. People who live busy, noisy lives are rarely granted access to these areas. Silence, it appears, is not the opposite of sound. It is another world altogether, literally offering a deeper level of thought, a journey to the bedrock of the self.”