Who said "To teach geometry is to teach how to think."?

This quote is attributed to Euclid.

To teach geometry is to teach how to think. - Euclid

"To teach geometry is to teach how to think."

Euclid Education

Mathematician Greek -325–-265

"The laws of nature are but the mathematical thoughts of God."

"There is no royal road to geometry."

"What is even more aggravating than a sigmoid journey through a circle is the sheer tedium of squaring it."

"Points, lines, and planes are the foundation of all that we see."

"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."