--- title: "Meaning & Key Takeaway of: …I learned in biology class that more…" description: "\"“…I learned in biology class that more bacteria live and work in one centimeter of my colon, than the number of people who have ever existed in the wor..." image: "https://sms4smile.com/quotes/i/7b5/neil-degrasse-tyson-143_bacteria_i-learned-in-biology-class-that-more-bac_3098722.png" --- # …I learned in biology class that more bacteria live and… ![“…I learned in biology class that more bacteria live and work in one centimeter of my colon, than the number of people who have ever existed in the world. That kind of information makes you think twice about who–or what–is actually in charge.” quote by Neil deGrasse Tyson](https://sms4smile.com/quotes/i/7b5/neil-degrasse-tyson-143_bacteria_i-learned-in-biology-class-that-more-bac_3098722.png) [Download](https://sms4smile.com/quotes/i/7b5/neil-degrasse-tyson-143_bacteria_i-learned-in-biology-class-that-more-bac_3098722.png) [Open image](https://sms4smile.com/quotes/i/7b5/neil-degrasse-tyson-143_bacteria_i-learned-in-biology-class-that-more-bac_3098722.png) > ““…I learned in biology class that more bacteria live and work in one centimeter of my colon, than the number of people who have ever existed in the world. That kind of information makes you think twice about who–or what–is actually in charge.”” [Neil deGrasse Tyson](https://sms4smile.com/quotes/author/neil-degrasse-tyson/) ## About This Quote This interpretation was drafted with AI assistance. It is one reading of the quote, not the author's own explanation. The sheer number of microbes in our bodies dwarfs human history, prompting humility about control and dominance. **In simple terms:** Microbes outnumber humans, challenging our sense of control. Key Takeaway Recognize the unseen ecosystems that shape us. Themes humility interconnectedness science Mood thoughtful humble Type scientific philosophical When to use this quote - health education - environmental policy - personal health decisions Key Concepts microbiome scale perception Questions to Reflect On - What does this perspective teach about our place in nature? - How can we balance respect for microbes with human responsibility? A Different Perspective Emphasizing microbes may distract from human agency in societal issues. ★ ★ ★ ★ ★ No ratings yet [Bacteria](https://sms4smile.com/quotes/about/bacteria/) [Bacteria Live](https://sms4smile.com/quotes/about/bacteria-live-3068977/) [Biology](https://sms4smile.com/quotes/about/biology/) [Biology Class](https://sms4smile.com/quotes/about/biology-class-5361404/) [Centimeter Colon](https://sms4smile.com/quotes/about/centimeter-colon-5361402/) [Class Bacteria](https://sms4smile.com/quotes/about/class-bacteria-5361403/) [Learned Biology](https://sms4smile.com/quotes/about/learned-biology-5361401/) ## Related quotes > [“You could also ask who’s in charge. Lots of people think, well, we’re humans; we’re the most intelligent and accomplished species; we’re in charge.…](https://sms4smile.com/quotes/neil-degrasse-tyson/you-could-also-ask-who-s-in-charge-lots-of-people-think-well-we-re/) [Neil deGrasse Tyson](https://sms4smile.com/quotes/author/neil-degrasse-tyson/) > [Lots of people think, well, we're humans; we're the most intelligent and accomplished species; we're in charge. Bacteria may have a different outlook: more…](https://sms4smile.com/quotes/neil-degrasse-tyson/lots-of-people-think-well-we-re-humans-we-re-the-most-intelligent-and/) [Neil deGrasse Tyson](https://sms4smile.com/quotes/author/neil-degrasse-tyson/) > [Bacteria live in unbelievable mixtures of hundreds or thousands of species. Like on your teeth. There are 600 species of bacteria on your teeth…](https://sms4smile.com/quotes/bonnie-bassler/bacteria-live-in-unbelievable-mixtures-of-hundreds-or-thousands-of/) [Bonnie Bassler](https://sms4smile.com/quotes/author/bonnie-bassler/) > [With one linear centimeter of your lower colon there lives and works more bacteria (about 100 billion) that all humans who have ever been…](https://sms4smile.com/quotes/neil-degrasse-tyson/with-one-linear-centimeter-of-your-lower-colon-there-lives-and-works/) [Neil deGrasse Tyson](https://sms4smile.com/quotes/author/neil-degrasse-tyson/) > [“Eighty-five percent of recorded species live in the terrestrial realm, and the majority of these, some 850,000, are arthropods (that is, insects, spiders, and…](https://sms4smile.com/quotes/richard-e-leakey/eighty-five-percent-of-recorded-species-live-in-the-terrestrial-realm/) [Richard E. 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Eric Drexler](https://sms4smile.com/quotes/author/k-eric-drexler/) > [“According to pioneering microbiologist Lynn Margulis, "fully 10 percent of our own dry body weight consists of bacteria, some of which, although they are…](https://sms4smile.com/quotes/marcia-bjornerud/according-to-pioneering-microbiologist-lynn-margulis-fully-10-percent/) [Marcia Bjornerud](https://sms4smile.com/quotes/author/marcia-bjornerud/) > [“Drinking lots of alcohol makes the gut leakier, allowing microbes to more readily influence the brain. Could that help to explain why alcoholics often…](https://sms4smile.com/quotes/ed-yong/drinking-lots-of-alcohol-makes-the-gut-leakier-allowing-microbes-to/) [Ed Yong](https://sms4smile.com/quotes/author/ed-yong/) > [There are more microbes per person than the entire population of the world. Imagine that. Per person. 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"Stuff and silliness," said the old lady.…](https://sms4smile.com/quotes/neil-gaiman/you-can-t-just-boss-bacteria-around-like-that-said-the-younger-mrs/) [Neil Gaiman](https://sms4smile.com/quotes/author/neil-gaiman/) > [...The large majority of those infectious microbes that cause us so much illness and pain are ANAEROBIC...a big word that means they live and…](https://sms4smile.com/quotes/ed-mccabe/the-large-majority-of-those-infectious-microbes-that-cause-us-so-much/) [Ed McCabe](https://sms4smile.com/quotes/author/ed-mccabe/) > [“Bacteria and viruses were the most effective allies.”](https://sms4smile.com/quotes/eduardo-hughes-galeano/bacteria-and-viruses-were-the-most-effective-allies/) [Eduardo Hughes Galeano](https://sms4smile.com/quotes/author/eduardo-hughes-galeano/) ## More by Neil deGrasse Tyson > [I don't want to go into space because of war. I think we would if it was triggered. 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In…](https://sms4smile.com/quotes/neil-degrasse-tyson/the-caricature-of-science-is-that-we-hold-tight-to-the-theories-we/) [Neil deGrasse Tyson](https://sms4smile.com/quotes/author/neil-degrasse-tyson/) > [New generations of humans inherit the acquired discoveries of generations past, allowing cosmic insight to accumulate without limit. Each discovery of science therefore adds…](https://sms4smile.com/quotes/neil-degrasse-tyson/new-generations-of-humans-inherit-the-acquired-discoveries-of/) [Neil deGrasse Tyson](https://sms4smile.com/quotes/author/neil-degrasse-tyson/) > [I've said multiple times that the world's first trillionaire is going to be the person who exploits the resources of asteroids, the natural resources…](https://sms4smile.com/quotes/neil-degrasse-tyson/i-ve-said-multiple-times-that-the-world-s-first-trillionaire-is-going/) [Neil deGrasse Tyson](https://sms4smile.com/quotes/author/neil-degrasse-tyson/) > [ They \[scientists of centuries past\] call on God only from the lonely and precarious edge of incomprehension. Where they feel certain about their explanations,… ](https://sms4smile.com/quotes/neil-degrasse-tyson/they-scientists-of-centuries-past-call-on-god-only-from-the-lonely/) [Neil deGrasse Tyson](https://sms4smile.com/quotes/author/neil-degrasse-tyson/) > [We explore our environment, more than we are compelled to utter poetry, when we're toddlers. We start doing that later. Before that happens, every…](https://sms4smile.com/quotes/neil-degrasse-tyson/we-explore-our-environment-more-than-we-are-compelled-to-utter-poetry/) [Neil deGrasse Tyson](https://sms4smile.com/quotes/author/neil-degrasse-tyson/) > [You can't have people making decisions about the future of the world who are scientifically illiterate. That's a recipe for disaster. And I don't…](https://sms4smile.com/quotes/neil-degrasse-tyson/you-can-t-have-people-making-decisions-about-the-future-of-the-world/) [Neil deGrasse Tyson](https://sms4smile.com/quotes/author/neil-degrasse-tyson/) > [Science surrounds you. 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Look at how much we all spend just to get - well, I get sick on the loop-the-loop…](https://sms4smile.com/quotes/neil-degrasse-tyson/everybody-s-got-money-for-vacation-time-look-at-how-much-we-all-spend/) [Neil deGrasse Tyson](https://sms4smile.com/quotes/author/neil-degrasse-tyson/) [Explore all 1,143 Neil deGrasse Tyson quotes ](https://sms4smile.com/quotes/author/neil-degrasse-tyson/) ## More Bacteria quotes > [“Bacteria and viruses were the most effective allies.”](https://sms4smile.com/quotes/eduardo-hughes-galeano/bacteria-and-viruses-were-the-most-effective-allies/) [Eduardo Hughes Galeano](https://sms4smile.com/quotes/author/eduardo-hughes-galeano/) > [...The large majority of those infectious microbes that cause us so much illness and pain are ANAEROBIC...a big word that means they live and…](https://sms4smile.com/quotes/ed-mccabe/the-large-majority-of-those-infectious-microbes-that-cause-us-so-much/) [Ed McCabe](https://sms4smile.com/quotes/author/ed-mccabe/) > [You can't just boss bacteria around like that," said the younger Mrs. Hempstock. "They don't like it." "Stuff and silliness," said the old lady.…](https://sms4smile.com/quotes/neil-gaiman/you-can-t-just-boss-bacteria-around-like-that-said-the-younger-mrs/) [Neil Gaiman](https://sms4smile.com/quotes/author/neil-gaiman/) > [There are more microbes per person than the entire population of the world. Imagine that. Per person. This means that if the time scale…](https://sms4smile.com/quotes/alan-bennett/there-are-more-microbes-per-person-than-the-entire-population-of-the/) [Alan Bennett](https://sms4smile.com/quotes/author/alan-bennett/) > [“Drinking lots of alcohol makes the gut leakier, allowing microbes to more readily influence the brain. Could that help to explain why alcoholics often…](https://sms4smile.com/quotes/ed-yong/drinking-lots-of-alcohol-makes-the-gut-leakier-allowing-microbes-to/) [Ed Yong](https://sms4smile.com/quotes/author/ed-yong/) > [“According to pioneering microbiologist Lynn Margulis, "fully 10 percent of our own dry body weight consists of bacteria, some of which, although they are…](https://sms4smile.com/quotes/marcia-bjornerud/according-to-pioneering-microbiologist-lynn-margulis-fully-10-percent/) [Marcia Bjornerud](https://sms4smile.com/quotes/author/marcia-bjornerud/) > [Plants with leaves no more efficient than today's solar cells could out-compete real plants, crowding the biosphere with an inedible foliage. Tough omnivorous bacteria…](https://sms4smile.com/quotes/k-eric-drexler/plants-with-leaves-no-more-efficient-than-today-s-solar-cells-could/) [K. Eric Drexler](https://sms4smile.com/quotes/author/k-eric-drexler/) > [Nineteen hundred and three will bring great advances in surgery, in the study of bacteria, in the knowledge of the cause and prevention of…](https://sms4smile.com/quotes/thomas-a-edison/nineteen-hundred-and-three-will-bring-great-advances-in-surgery-in/) [Thomas A. Edison](https://sms4smile.com/quotes/author/thomas-a-edison/) > [Most people are surprised when they hear my somber figures: we know of 2 million species of plants, animals and microorganisms, and we can…](https://sms4smile.com/quotes/e-o-wilson/most-people-are-surprised-when-they-hear-my-somber-figures-we-know-of/) [E. O. Wilson](https://sms4smile.com/quotes/author/e-o-wilson/) > [Harmful bacteria, viruses, calcium-forming micro-organisms, and candida are part of our world. 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Leakey](https://sms4smile.com/quotes/author/richard-e-leakey/) > [As far as I am concerned, LGBT can only stand for leprosy, gonorrhea, bacteria, and tuberculosis, all of which are detrimental to human existence.](https://sms4smile.com/quotes/yahya-jammeh/as-far-as-i-am-concerned-lgbt-can-only-stand-for-leprosy-gonorrhea/) [Yahya Jammeh](https://sms4smile.com/quotes/author/yahya-jammeh/) > [There are about 250,000 different species of fossil plants and animals known . . In spite of this large quantity of information, it is…](https://sms4smile.com/quotes/david-m-raup/there-are-about-250-000-different-species-of-fossil-plants-and/) [David M. Raup](https://sms4smile.com/quotes/author/david-m-raup/) > [Human health should now be thought of as a collective property of the human-associate d microbiota, as one group of researchers recently concluded in…](https://sms4smile.com/quotes/michael-pollan/human-health-should-now-be-thought-of-as-a-collective-property-of-the/) [Michael Pollan](https://sms4smile.com/quotes/author/michael-pollan/) [Browse all 285 Bacteria quotes ](https://sms4smile.com/quotes/about/bacteria/) ```json { "@context": "https://schema.org", "@graph": [ { "@type": "Quotation", "text": "“…I learned in biology class that more bacteria live and work in one centimeter of my colon, than the number of people who have ever existed in the world. 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