Eratosthenes — "The Earth is spherical, not flat."
The Earth is spherical, not flat.
The Earth is spherical, not flat.
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"One must observe the world carefully to understand its secrets."
"Eratosthenes refused to accept the popular understanding of any subject and sought always to find out the truth of a matter for himself."
"I am the second to the best."
"The sun's rays are parallel at great distances."
"The stars are not merely points of light; they are celestial bodies."
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