Eratosthenes — "I have calculated the length of the year with great care."
I have calculated the length of the year with great care.
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More from Eratosthenes
"The Sun is so far away that its rays are parallel when they reach Earth."
"One must observe the world carefully to understand its secrets."
"The Nile flows from the south, from unknown sources."
"The sun's rays are parallel at great distances."
"The earth is round and of vast circumference."