“The brain is a mystery; it has been and still will be. How does the brain produce thoughts? That is the central question and we have still no answer to it.”
As quoted in the article The Human Brain — Three Pounds of Mystery, in 'The Watchtower' magazine (15 July 1978)
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Charles Scott Sherrington 3
English neurophysiologist and Nobel Prize recipient 1857–1952Related quotes

On Literature, Revolution, Entropy and Other Matters (1923)
Context: It is an error to divide people into the living and the dead: there are people who are dead-alive, and people who are alive-alive. The dead-alive also write, walk, speak, act. But they make no mistakes; only machines make no mistakes, and they produce only dead things. The alive-alive are constantly in error, in search, in questions, in torment.
The same is true of what we write: it walks and it talks, but it can be dead-alive or alive-alive. What is truly alive stops before nothing and ceaselessly seeks answers to absurd, "childish" questions. Let the answers be wrong, let the philosophy be mistaken — errors are more valuable than truths: truth is of the machine, error is alive; truth reassures, error disturbs. And if answers be impossible of attainment, all the better! Dealing with answered questions is the privilege of brains constructed like a cow's stomach, which, as we know, is built to digest cud.

“See what happens when the brain is completely still.”
Source: 1970s, The Urgency of Change (1970), p. 184
Context: The brain is the source of thought. The brain is matter and thought is matter. Can the brain — with all its reactions and its immediate responses to every challenge and demand — can the brain be very still? It is not a question of ending thought, but of whether the brain can be completely still? This stillness is not physical death. See what happens when the brain is completely still. <!-- π

Autobiographical Essay (2001)

“A heart ain't a brain
But I think
That I still love
you”
The Honolulu Advertiser (20 June 1959) https://www.newspapers.com/image/259239643/?terms=Pogo, cited in "Pogo on intelligent life in the universe" by Garson O'Toole, in Archive of the American Dialect Society listserver (16 February 2017) http://listserv.linguistlist.org/pipermail/ads-l/2017-February/146520.html, and in 'Pogo Comic on Extraterrestrials: Either Way, It’s a Mighty Soberin’ Thought", The Quote Investigator (18 February 2017) http://quoteinvestigator.com/2017/02/18/space/. This has often been paraphrased as: "Thar’s only two possibilities: Thar is life out there in the universe which is smarter than we are, or we’re the most intelligent life in the universe. Either way, it’s a mighty sobering thought."
Pogo comic strip (1948 - 1975), Porky Pine

“This is your brain. This is Perl. This is your brain on Perl. Any questions?”
Re: can lisp do what perl does easily? http://groups.google.com/group/comp.lang.lisp/msg/fc76ebab1cb2f863 (Usenet article).
Usenet articles, Perl