Who said "I've learned the hard way."?

This quote is attributed to Rick Grimes.

I've learned the hard way. - Rick Grimes

"I've learned the hard way."

Rick Grimes Education

"We are the walking dead."

"This is not a democracy anymore."

"We don't kill the living."

"I'm not the same man I was before."

"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."