" 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. "

― Michael Finkel , The Stranger in the Woods: The Extraordinary Story of the Last True Hermit