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changes is where <strong>the</strong> bra<strong>in</strong> is function<strong>in</strong>g.<br />
Language and hear<strong>in</strong>g are seated <strong>in</strong> <strong>the</strong> cerebral cortex, <strong>the</strong> folded gray matter that covers <strong>the</strong> first couple<br />
of millimeters of <strong>the</strong> outer bra<strong>in</strong> like wrapp<strong>in</strong>g paper. When one experiences silence, absent even read<strong>in</strong>g,<br />
<strong>the</strong> cerebral cortex typically rests. Meanwhile, deeper and more ancient bra<strong>in</strong> structures seem to be<br />
activated—<strong>the</strong> subcortical zones. People who live busy, noisy lives are rarely granted access to <strong>the</strong>se areas.<br />
Silence, it appears, is not <strong>the</strong> opposite of sound. It is ano<strong>the</strong>r world altoge<strong>the</strong>r, literally offer<strong>in</strong>g a deeper<br />
level of thought, a journey to <strong>the</strong> bedrock of <strong>the</strong> self.<br />
While sitt<strong>in</strong>g slump-shouldered on his stool <strong>in</strong> <strong>the</strong> visit<strong>in</strong>g booth of <strong>the</strong> jail, speak<strong>in</strong>g of his <strong>in</strong>ner<br />
voyages, Knight seemed to be <strong>in</strong> an <strong>in</strong>trospective mood. I wondered, despite his aversion to dispens<strong>in</strong>g<br />
wisdom, if he’d be will<strong>in</strong>g to share more of what he learned while alone. People have been approach<strong>in</strong>g<br />
hermits with this request for thousands of years, eager to consult with someone whose life has been so<br />
radically different. James Joyce wrote <strong>in</strong> A Portrait of <strong>the</strong> Artist as a Young Man that a solitary person is<br />
able to tap <strong>in</strong>to “<strong>the</strong> wild heart of life.”<br />
Responses from hermits have often been elusive. Tenz<strong>in</strong> Palmo, pressed for her conclusions about liv<strong>in</strong>g<br />
silently <strong>in</strong> a cave for a dozen years, said only, “Well, it wasn’t bor<strong>in</strong>g.” Ralph Waldo Emerson wrote, “He<br />
that th<strong>in</strong>ks most, will say least.” <strong>The</strong> Tao Te Ch<strong>in</strong>g says, “Those who know do not tell; those who tell do not<br />
know.” <strong>The</strong> great computer Deep Thought, <strong>in</strong> Douglas Adams’s Hitchhiker’s Guide to <strong>the</strong> Galaxy, worked<br />
on <strong>the</strong> problem for seven and a half million years, <strong>the</strong>n revealed that <strong>the</strong> answer to life, <strong>the</strong> universe, and<br />
everyth<strong>in</strong>g was <strong>the</strong> number forty-two.<br />
Now it felt like my turn to ask. Was <strong>the</strong>re some grand <strong>in</strong>sight, I questioned Knight, revealed to him <strong>in</strong> <strong>the</strong><br />
wild? I was serious about <strong>the</strong> request. Profound truths, or at least those that make sense of <strong>the</strong> seem<strong>in</strong>g<br />
randomness of life, have always eluded me. What Knight had done was like what Thoreau had—it may, <strong>in</strong><br />
fact, be <strong>the</strong> men’s similarities that is <strong>the</strong> source of Knight’s contempt. Thoreau wrote <strong>in</strong> Walden that he had<br />
reduced existence to its basic elements so that he could “live deep and suck out all <strong>the</strong> marrow of life.”<br />
Maybe, I thought, Knight would talk about <strong>the</strong> marrow.<br />
He sat quietly, whe<strong>the</strong>r th<strong>in</strong>k<strong>in</strong>g or fum<strong>in</strong>g or both, it was hard to tell. But he eventually arrived at a<br />
reply. It felt like some great mystic was about to reveal <strong>the</strong> Mean<strong>in</strong>g of Life.<br />
“Get enough sleep,” he said.<br />
He set his jaw <strong>in</strong> a way that conveyed he wouldn’t be say<strong>in</strong>g any more. This was what he’d learned. I<br />
accepted it as truth.