VI. Human Existence in Sleep and Death
This has been known for quite a long time. But today people don't like to remember such things that have been known for a long time. Even in the 19th century, at the very beginning, people who wrote about this said: Man should work for 8 hours, be alone for 8 hours and sleep for 8 hours. That leaves 16 hours of wakefulness and 8 hours of sleep, so 3 times 8 = 24 hours.
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