Who said "A man who stops learning is a man who stops living."?

This quote is attributed to Charlemagne.

A man who stops learning is a man who stops living. - Charlemagne

"A man who stops learning is a man who stops living."

Charlemagne Education

Military Emperor Frankish 742–814

"A faithful friend is a strong defense, and he that hath found one hath found a treasure."

"The three most important things for a leader are justice, wisdom, and courage."

"To have another language is to possess a second soul."

"Learning never exhausts the mind."

"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."