Who said "The mind must be exercised like the body."?

This quote is attributed to Eratosthenes.

The mind must be exercised like the body. - Eratosthenes

"The mind must be exercised like the body."

Eratosthenes Education

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."

"Education opens doors."

"Education opens doors to endless possibilities."

"I ain't got the education you got, bub."

"You can't put a price on history."