Who said "Knowledge is the only weapon that can't be taken from you."?

This quote is attributed to Gilly.

Knowledge is the only weapon that can't be taken from you. - Gilly

"Knowledge is the only weapon that can't be taken from you."

Gilly Education

"I'm not a clever man, but I can see things. Things that others cannot."

"The wildlings are more than just raiders and thieves. They're people trying to survive."

"I've seen things beyond the Wall that would make your blood run cold."

"Sometimes the smallest person can make the biggest difference."

"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."