Daniel Lang

“Caffeine—which is not only prevalent in coffee, certain teas, and many energy drinks, but also foods such as dark chocolate and ice cream, as well as drugs such as weight-loss pills and pain relievers—is one of the most common culprits that keep people from falling asleep easily and sleeping soundly thereafter, typically masquerading as insomnia, an actual medical condition.”
― Matthew Walker, Why We Sleep: Unlocking the Power of Sleep and Dreams

“Caffeine has an average half-life of five to seven hours. Let’s say that you have a cup of coffee after your evening dinner, around 7:30 p.m. This means that by 1:30 a.m., 50 percent of that caffeine may still be active and circulating throughout your brain tissue. In other words, by 1:30 a.m., you’re only halfway to completing the job of cleansing your brain of the caffeine you drank after dinner.”
― Matthew Walker, Why We Sleep: The New Science of Sleep and Dreams

“if you don’t sleep the very first night after learning, you lose the chance to consolidate those memories, even if you get lots of “catch-up” sleep thereafter. In terms of memory, then, sleep is not like the bank. You cannot accumulate a debt and hope to pay it off at a later point in time. Sleep for memory consolidation is an all-or-nothing event.”
― Matthew Walker, Why We Sleep: Unlocking the Power of Sleep and Dreams

“In today's culture we take the package for the content, the vehicle for the precious cargo. We attribute reality to physical phenomena while taking their *meanings* to be inconsequential fantasies. By extricating 'reality' from mind, materialism has sent the significance of nature into exile. With the pathetic grin of hubris stamped on our foolish faces, we carefully unwrap the package and then proceed to throw away its contents while proudly storing the empty box on the altar of our ontology.”
― Bernardo Kastrup, Why Materialism Is Baloney: How True Skeptics Know There is no Death and Fathom Answers to Life, the Universe and Everything