Eratosthenes — "There are two ways to measure the Earth: one by walking, the other by thinking."
There are two ways to measure the Earth: one by walking, the other by thinking.
There are two ways to measure the Earth: one by walking, the other by thinking.
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"The Nile floods annually because of summer rains in Ethiopia."
"One must rely on observation and reason, not myth."
"One must combine practical observation with theoretical understanding."
"I have calculated the length of the year with great care."
"The world is not a perfect sphere, but an oblate spheroid."
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