--- title: "Meaning & Key Takeaway of: If the little grey cells are not…" description: "\"“If the little grey cells are not exercised, they grow the rust.”\" — Agatha Christie" image: "https://sms4smile.com/quotes/i/c91/agatha-christie-154_grey_if-the-little-grey-cells-are-not-exercis_2363667.jpg" --- # If the little grey cells are not exercised, they grow the… ![“If the little grey cells are not exercised, they grow the rust.” quote by Agatha Christie](https://sms4smile.com/quotes/i/c91/agatha-christie-154_grey_if-the-little-grey-cells-are-not-exercis_2363667.jpg) [Download](https://sms4smile.com/quotes/i/c91/agatha-christie-154_grey_if-the-little-grey-cells-are-not-exercis_2363667.jpg) [Open image](https://sms4smile.com/quotes/i/c91/agatha-christie-154_grey_if-the-little-grey-cells-are-not-exercis_2363667.jpg) > ““If the little grey cells are not exercised, they grow the rust.”” [Agatha Christie](https://sms4smile.com/quotes/author/agatha-christie/) ## About This Quote This interpretation was drafted with AI assistance. It is one reading of the quote, not the author's own explanation. Neglecting mental exercise leads to mental decay and stagnation. **In simple terms:** Unused brain cells deteriorate. Key Takeaway Exercise your mind daily. Themes mental health learning self-improvement Mood thoughtful inquisitive Type advice philosophical When to use this quote - studying - solving puzzles - learning new skills - reading - critical thinking Key Concepts cognitive decline brain plasticity Questions to Reflect On - How do you keep your mind active? - What activities sharpen your mental faculties? A Different Perspective Intellectual growth also requires proper nutrition and rest. ★ ★ ★ ★ ★ No ratings yet [Grey](https://sms4smile.com/quotes/about/grey/) ## Related quotes > [These little grey cells. It is up to them.](https://sms4smile.com/quotes/anonymous/these-little-grey-cells-it-is-up-to-them/) [Anonymous](https://sms4smile.com/quotes/author/anonymous/) > [You should employ your little grey cells](https://sms4smile.com/quotes/agatha-christie/you-should-employ-your-little-grey-cells/) [Agatha Christie](https://sms4smile.com/quotes/author/agatha-christie/) > [“Use your little grey cells mon ami" (Hercule Poirot in 'The Mysterious Affair At Styles')”](https://sms4smile.com/quotes/agatha-christie/use-your-little-grey-cells-mon-ami-hercule-poirot-in-the-mysterious/) [Agatha Christie](https://sms4smile.com/quotes/author/agatha-christie/) > [We are all somewhere or the other a little grey, not black and white. We have our imperfections.](https://sms4smile.com/quotes/kriti-sanon/we-are-all-somewhere-or-the-other-a-little-grey-not-black-and-white/) [Kriti Sanon](https://sms4smile.com/quotes/author/kriti-sanon/) > [Those who only see in black and white have very little grey matter.](https://sms4smile.com/quotes/jeff-rosenspan/those-who-only-see-in-black-and-white-have-very-little-grey-matter/) Jeff Rosenspan > [“To the delight of the poetic little gutter boys in the little grey streets.”](https://sms4smile.com/quotes/g-k-chesterton/to-the-delight-of-the-poetic-little-gutter-boys-in-the-little-grey/) [G.K. Chesterton](https://sms4smile.com/quotes/author/g-k-chesterton/) > [“Katherine Grey was born with the power of managing old ladies, dogs, and small boys, and she did it without any apparent sense of…](https://sms4smile.com/quotes/agatha-christie/katherine-grey-was-born-with-the-power-of-managing-old-ladies-dogs/) [Agatha Christie](https://sms4smile.com/quotes/author/agatha-christie/) > [Its better to wear out than to rust out.](https://sms4smile.com/quotes/richard-cumberland/its-better-to-wear-out-than-to-rust-out/) Richard Cumberland > [Great talents, by the rust of long disuse, Grow lethargic and shrink from what they were.](https://sms4smile.com/quotes/ovid/great-talents-by-the-rust-of-long-disuse-grow-lethargic-and-shrink/) [Ovid](https://sms4smile.com/quotes/author/ovid/) > [Keep up your bright swords, for the dew will rust them.](https://sms4smile.com/quotes/william-shakespeare/keep-up-your-bright-swords-for-the-dew-will-rust-them/) [William Shakespeare](https://sms4smile.com/quotes/author/william-shakespeare/) > [Sorrow is the mere rust of the soul. 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I used to believe in ring rust, but I talked to my buddy Dominic Cruz, who's a bantamweight,…](https://sms4smile.com/quotes/tyron-woodley/i-don-t-believe-in-ring-rust-i-used-to-believe-in-ring-rust-but-i/) [Tyron Woodley](https://sms4smile.com/quotes/author/tyron-woodley/) > [Worry is only rust on the blade](https://sms4smile.com/quotes/henry-ward-hughes/worry-is-only-rust-on-the-blade/) Henry Ward Hughes > [And the rest is rust and stardust.](https://sms4smile.com/quotes/vladimir-nabokov/and-the-rest-is-rust-and-stardust/) [Vladimir Nabokov](https://sms4smile.com/quotes/author/vladimir-nabokov/) ## More by Agatha Christie > [One must accept the fact that we have only one companion in this world, a companion who accompanies us from the cradle to the…](https://sms4smile.com/quotes/agatha-christie/one-must-accept-the-fact-that-we-have-only-one-companion-in-this/) [Agatha Christie](https://sms4smile.com/quotes/author/agatha-christie/) > [“I like to see an angry Englishman," said Poirot. 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All those long scenes where everybody is drunk and it's supposed to be funny.”](https://sms4smile.com/quotes/agatha-christie/i-m-afraid-i-always-find-shakespeare-terribly-dreary-all-those-long/) [Agatha Christie](https://sms4smile.com/quotes/author/agatha-christie/) > [“Either her dream had taken a very odd turn or else - or else Mary had really rushed into the room and had said…](https://sms4smile.com/quotes/agatha-christie/either-her-dream-had-taken-a-very-odd-turn-or-else-or-else-mary-had/) [Agatha Christie](https://sms4smile.com/quotes/author/agatha-christie/) > [“Every murderer is probably somebody’s old friend,” observed Poirot philosophically. “You cannot mix up sentiment and reason.”](https://sms4smile.com/quotes/agatha-christie/every-murderer-is-probably-somebody-s-old-friend-observed-poirot/) [Agatha Christie](https://sms4smile.com/quotes/author/agatha-christie/) > [“Well, of course, it was not any of my business but you get very queer glimpses of life sometimes, and you can't help speculating…](https://sms4smile.com/quotes/agatha-christie/well-of-course-it-was-not-any-of-my-business-but-you-get-very-queer/) [Agatha Christie](https://sms4smile.com/quotes/author/agatha-christie/) > [“Mr. Satterthwaite looked cheered. Suddenly an idea struck him. His jaw fell. "My goodness," he cried, "I've only just realized it! That rascal, with…](https://sms4smile.com/quotes/agatha-christie/mr-satterthwaite-looked-cheered-suddenly-an-idea-struck-him-his-jaw/) [Agatha Christie](https://sms4smile.com/quotes/author/agatha-christie/) > [“The old gentleman refuses to have the telephone which he regards as a device of the devil, and on a par with radio, television,…](https://sms4smile.com/quotes/agatha-christie/the-old-gentleman-refuses-to-have-the-telephone-which-he-regards-as-a/) [Agatha Christie](https://sms4smile.com/quotes/author/agatha-christie/) > [“That’s how they do it, these girls! 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Sadness crept…](https://sms4smile.com/quotes/agatha-christie/poirot-watching-him-felt-suddenly-a-doubt-an-uncomfortable-twinge-was/) [Agatha Christie](https://sms4smile.com/quotes/author/agatha-christie/) > [In the midst of life, we are in death.](https://sms4smile.com/quotes/agatha-christie/in-the-midst-of-life-we-are-in-death/) [Agatha Christie](https://sms4smile.com/quotes/author/agatha-christie/) > [Then there are some minor points that strike me as suggestive - for instance, the position of Mrs. Hubbard's sponge bag, the name of…](https://sms4smile.com/quotes/agatha-christie/then-there-are-some-minor-points-that-strike-me-as-suggestive-for/) [Agatha Christie](https://sms4smile.com/quotes/author/agatha-christie/) [Explore all 1,053 Agatha Christie quotes ](https://sms4smile.com/quotes/author/agatha-christie/) ## More Grey quotes > [People project a grey energy that is very destructive to weaken you, to drain you - just as the snake uses position to capture…](https://sms4smile.com/quotes/frederick-lenz/people-project-a-grey-energy-that-is-very-destructive-to-weaken-you/) [Frederick Lenz](https://sms4smile.com/quotes/author/frederick-lenz/) > [Common sense is the guy who tells you that you ought to have had your brakes relined last week before you smashed a front…](https://sms4smile.com/quotes/raymond-chandler/common-sense-is-the-guy-who-tells-you-that-you-ought-to-have-had-your/) [Raymond Chandler](https://sms4smile.com/quotes/author/raymond-chandler/) > [She feels like kicking out all the windows And setting fire to this life She could change everything about her using colors bold and…](https://sms4smile.com/quotes/dave-matthews/she-feels-like-kicking-out-all-the-windows-and-setting-fire-to-this/) [Dave Matthews](https://sms4smile.com/quotes/author/dave-matthews/) > [I don't exactly relate to grey characters.](https://sms4smile.com/quotes/kay-kay-menon/i-don-t-exactly-relate-to-grey-characters/) [Kay Kay Menon](https://sms4smile.com/quotes/author/kay-kay-menon/) > [In 'Karol Bagh,' I was playing a supporting role, the character had grey shades.](https://sms4smile.com/quotes/sargun-mehta/in-karol-bagh-i-was-playing-a-supporting-role-the-character-had-grey/) [Sargun Mehta](https://sms4smile.com/quotes/author/sargun-mehta/) > [Iron and coal dominated everywhere, from grey to black: the black boots, the black stove-pipe hat, the black coach or carriage, the black iron…](https://sms4smile.com/quotes/lewis-mumford/iron-and-coal-dominated-everywhere-from-grey-to-black-the-black-boots/) [Lewis Mumford](https://sms4smile.com/quotes/author/lewis-mumford/) > [“We're going to die. 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Reality creates consciousness; consciousness creates…](https://sms4smile.com/quotes/peter-shepherd/so-many-assume-the-truth-is-either-black-or-white-it-s-all-evolution/) [Peter Shepherd](https://sms4smile.com/quotes/author/peter-shepherd/) > [“Beside her I felt grey, like she had all the colours I'd ever need.”](https://sms4smile.com/quotes/daniela-sacerdoti/beside-her-i-felt-grey-like-she-had-all-the-colours-i-d-ever-need/) Daniela Sacerdoti > [Yes, Garnett Grey was an Architect. 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