Eratosthenes — "There are five planets, and they all orbit the sun."
There are five planets, and they all orbit the sun.
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More from Eratosthenes
"The inhabited world is larger than previously thought."
"I have spent my life seeking knowledge."
"The circumference calculation was based on principles of geometry and astronomy."
"Learning is the only thing the mind never exhausts, never fears, and never regrets."
"One must observe the world carefully to understand its secrets."
Details
While he accepted a geocentric model, some sources suggest he was aware of heliocentric ideas and contributed to understanding planetary motions, but this specific quote is not directly attested.
Date: c. 250 BCE
Nature & WorldVerification
Unverifiable
Found in 1 providers: grok
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