Certain diversions we do because we more or less have to do, such as vigorous exercising, studying languages, sex, travel, and reading. And these all have their proper place. But there are times when the collective strain of responsibility, and the stress of duties, demand that entirely new parts of our brain be activated and exercised. When I say “new” parts of the brain, I mean literally that: a man can rub raw a particular part of his brain by continually using it, and exhaust himself by repetitive tasks.
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