--- title: "Meaning & Key Takeaway of: Eratosthenes's only tools were sticks…" description: "\"Eratosthenes's only tools were sticks, eyes, feet, and brains; plus a zest for experiment. With those tools he correctly deduced the circumference of t..." image: "https://sms4smile.com/quotes/i/7b8/carl-sagan-160_atheism_eratosthenes-s-only-tools-were-sticks-ey_1459920.jpg" --- # Eratosthenes's only tools were sticks, eyes, feet, and… ![“Eratosthenes's only tools were sticks, eyes, feet, and brains; plus a zest for experiment. With those tools he correctly deduced the circumference of the Earth, to high precision, with an error of only a few percent. That's pretty good figuring for 2200 years ago.” quote by Carl Sagan](https://sms4smile.com/quotes/i/7b8/carl-sagan-160_atheism_eratosthenes-s-only-tools-were-sticks-ey_1459920.jpg) [Download](https://sms4smile.com/quotes/i/7b8/carl-sagan-160_atheism_eratosthenes-s-only-tools-were-sticks-ey_1459920.jpg) [Open image](https://sms4smile.com/quotes/i/7b8/carl-sagan-160_atheism_eratosthenes-s-only-tools-were-sticks-ey_1459920.jpg) > “Eratosthenes's only tools were sticks, eyes, feet, and brains; plus a zest for experiment. With those tools he correctly deduced the circumference of the Earth, to high precision, with an error of only a few percent. That's pretty good figuring for 2200 years ago.” [Carl Sagan](https://sms4smile.com/quotes/author/carl-sagan/) ## About This Quote This interpretation was drafted with AI assistance. It is one reading of the quote, not the author's own explanation. Eratosthenes used simple tools and curiosity to measure Earth's size with remarkable accuracy. **In simple terms:** Simple tools plus curiosity yield great discoveries. Key Takeaway Encourage curiosity and resourcefulness. Themes science history exploration methodology Mood inspirational educational Type scientific historical When to use this quote - education - DIY projects - field research - problem solving Key Concepts empirical observation experimental mindset Questions to Reflect On - What simple tools can you use to explore? - How does curiosity drive innovation? A Different Perspective Modern tools can both help and distract from fundamentals. ★ ★ ★ ★ ★ No ratings yet [2200 Years](https://sms4smile.com/quotes/about/2200-years-5271576/) [Atheism](https://sms4smile.com/quotes/about/atheism/) [Brain](https://sms4smile.com/quotes/about/brain/) [Circumference Earth](https://sms4smile.com/quotes/about/circumference-earth-1843467/) [Deduced Circumference](https://sms4smile.com/quotes/about/deduced-circumference-5271575/) [Earth](https://sms4smile.com/quotes/about/earth/) [Eratosthenes](https://sms4smile.com/quotes/about/eratosthenes-952442/) [Eratosthenes Tools](https://sms4smile.com/quotes/about/eratosthenes-tools-5271574/) [Errors](https://sms4smile.com/quotes/about/errors/) [Experiments](https://sms4smile.com/quotes/about/experiments/) [Eye](https://sms4smile.com/quotes/about/eye/) [Feet](https://sms4smile.com/quotes/about/feet/) [Percent](https://sms4smile.com/quotes/about/percent/) [Plus](https://sms4smile.com/quotes/about/plus/) [Positive atheism](https://sms4smile.com/quotes/about/positive-atheism/) [Precision](https://sms4smile.com/quotes/about/precision/) [Pretty good](https://sms4smile.com/quotes/about/pretty-good/) [Sticks](https://sms4smile.com/quotes/about/sticks/) [Tools](https://sms4smile.com/quotes/about/tools/) [Years](https://sms4smile.com/quotes/about/years/) [Years ago](https://sms4smile.com/quotes/about/years-ago/) [Zest](https://sms4smile.com/quotes/about/zest/) ## Related quotes > [Remembering that Eratosthenes of Cyrene, employing mathematical theories and geometrical methods, discovered from the course of the sun, the shadows cast by an equinoctial…](https://sms4smile.com/quotes/marcus-vitruvius-pollio/remembering-that-eratosthenes-of-cyrene-employing-mathematical/) [Marcus Vitruvius Pollio](https://sms4smile.com/quotes/author/marcus-vitruvius-pollio/) > [“Columbus therefore cheated on his calculations, as the examining faculty of the University of Salamanca quite correctly pointed out. 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