In the library of Alexandria, I learned that all human knowl... - Eratosthenes

"In the library of Alexandria, I learned that all human knowledge is but a grain of sand on an infinite beach."

Eratosthenes

Mathematician Geographer Ancient Greece 276–194

More from Eratosthenes

"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."