Who said "Nature is the greatest teacher."?

This quote is attributed to Eratosthenes.

Nature is the greatest teacher. - Eratosthenes

"Nature is the greatest teacher."

Eratosthenes Nature

Mathematician Geographer Ancient Greece 276–194

"Measure the Earth and you measure the heavens."

"Knowledge is the greatest treasure of all."

"The pursuit of truth requires courage and perseverance."

"In mathematics, all things are possible."

"Nature teaches us about beauty."

"Nature teaches us patience and wisdom"

"Sometimes it snows in April."

"Every town has a soul, and Twin Peaks has a troubled one."